| [419] | 1 | (* Content-type: application/mathematica *) | 
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|  | 2 |  | 
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|  | 3 | (*** Wolfram Notebook File ***) | 
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|  | 4 | (* http://www.wolfram.com/nb *) | 
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|  | 5 |  | 
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|  | 6 | (* CreatedBy='Mathematica 6.0' *) | 
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|  | 7 |  | 
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|  | 8 | (*CacheID: 234*) | 
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|  | 9 | (* Internal cache information: | 
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|  | 10 | NotebookFileLineBreakTest | 
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|  | 11 | NotebookFileLineBreakTest | 
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|  | 12 | NotebookDataPosition[       145,          7] | 
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|  | 13 | NotebookDataLength[     36391,       1211] | 
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|  | 17 | WindowFrame->Normal | 
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|  | 18 | ContainsDynamic->False*) | 
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|  | 19 |  | 
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|  | 20 | (* Beginning of Notebook Content *) | 
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|  | 21 | Notebook[{ | 
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|  | 22 |  | 
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|  | 23 | Cell[CellGroupData[{ | 
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|  | 24 | Cell["Pavages du plan", "Title", | 
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|  | 25 | Evaluatable->False, | 
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|  | 26 | AspectRatioFixed->True], | 
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|  | 27 |  | 
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|  | 28 | Cell[TextData[{ | 
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|  | 29 | "Il existe partout des dessins obtenus par r\[EAcute]p\[EAcute]titions d'un \ | 
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|  | 30 | motif unique: carreaux d'une fen\[EHat]tre, tuiles d'une toiture, lattes de \ | 
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|  | 31 | bois d'une cl\[OHat]ture, briques d'un mur, papier peint, tissu,... On ne les \ | 
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|  | 32 | trouve pas seulement dans des objets produits par l'homme: le rayon de cire \ | 
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|  | 33 | d'abeille, la corolle des fleurs, le cristal de sel,...\nLa couverture d'un \ | 
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|  | 34 | plan par r\[EAcute]p\[EAcute]titions d'un m\[EHat]me motif, sans \ | 
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|  | 35 | chevauchements ni trous, s'appelle un ", | 
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|  | 36 | StyleBox["pavage", | 
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|  | 37 | FontWeight->"Bold"], | 
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|  | 38 | ". Comme c'est le cas pour toutes les t\[AHat]ches \ | 
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|  | 39 | r\[EAcute]p\[EAcute]titives, l'informatique s'av\[EGrave]re tr\[EGrave]s \ | 
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|  | 40 | utile pour produire des pavages." | 
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|  | 41 | }], "Text", | 
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|  | 42 | Evaluatable->False, | 
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|  | 43 | PageBreakAbove->False, | 
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|  | 44 | TextAlignment->Left, | 
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|  | 45 | TextJustification->0, | 
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|  | 46 | AspectRatioFixed->True], | 
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|  | 47 |  | 
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|  | 48 | Cell[CellGroupData[{ | 
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|  | 49 |  | 
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|  | 50 | Cell["D\[EAcute]finition du motif", "Subsubtitle"], | 
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|  | 51 |  | 
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|  | 52 | Cell[TextData[{ | 
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|  | 53 | "Pour d\[EAcute]finir une forme, on proc\[EGrave]de comme ci-dessous. On \ | 
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|  | 54 | donne un nom sans espaces ou symboles ayant une signification \ | 
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|  | 55 | sp\[EAcute]ciale dans ", | 
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|  | 56 | StyleBox["Mathematica", | 
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|  | 57 | FontSlant->"Italic"], | 
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|  | 58 | " (comme - par exemple). Vient ensuite le signe =. Enfin, entre accolades, \ | 
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|  | 59 | on indique la couleur, puis, apr\[EGrave]s une virgule, viennent la ou les \ | 
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|  | 60 | primitives graphiques." | 
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|  | 61 | }], "Text", | 
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|  | 62 | Evaluatable->False, | 
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|  | 63 | AspectRatioFixed->True], | 
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|  | 64 |  | 
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|  | 65 | Cell[BoxData[{ | 
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|  | 66 | RowBox[{ | 
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|  | 67 | RowBox[{"carr\[EAcute]", "=", | 
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|  | 68 | RowBox[{"{", | 
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|  | 69 | RowBox[{ | 
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|  | 70 | RowBox[{"RGBColor", "[", | 
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|  | 71 | RowBox[{"1", ",", "0", ",", "0"}], "]"}], ",", | 
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|  | 72 | RowBox[{"Polygon", "[", | 
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|  | 73 | RowBox[{"{", | 
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|  | 74 | RowBox[{ | 
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|  | 75 | RowBox[{"{", | 
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|  | 76 | RowBox[{ | 
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|  | 77 | RowBox[{"-", "1"}], ",", | 
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|  | 78 | RowBox[{"-", "1"}]}], "}"}], ",", | 
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|  | 79 | RowBox[{"{", | 
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|  | 80 | RowBox[{ | 
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|  | 81 | RowBox[{"-", "1"}], ",", "1"}], "}"}], ",", | 
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|  | 82 | RowBox[{"{", | 
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|  | 83 | RowBox[{"1", ",", "1"}], "}"}], ",", | 
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|  | 84 | RowBox[{"{", | 
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|  | 85 | RowBox[{"1", ",", | 
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|  | 86 | RowBox[{"-", "1"}]}], "}"}]}], "}"}], "]"}]}], "}"}]}], | 
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|  | 87 | ";"}], "\n", | 
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|  | 88 | RowBox[{ | 
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|  | 89 | RowBox[{"croix", "=", | 
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|  | 90 | RowBox[{"{", | 
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|  | 91 | RowBox[{ | 
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|  | 92 | RowBox[{"RGBColor", "[", | 
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|  | 93 | RowBox[{"1", ",", "1", ",", "0"}], "]"}], ",", | 
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|  | 94 | RowBox[{"Thickness", "[", "0.01", "]"}], ",", | 
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|  | 95 | RowBox[{"Line", "[", | 
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|  | 96 | RowBox[{"{", | 
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|  | 97 | RowBox[{ | 
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|  | 98 | RowBox[{"{", | 
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|  | 99 | RowBox[{ | 
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|  | 100 | RowBox[{"-", "0.5"}], ",", | 
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|  | 101 | RowBox[{"-", "0.5"}]}], "}"}], ",", | 
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|  | 102 | RowBox[{"{", | 
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|  | 103 | RowBox[{"0.5", ",", "0.5"}], "}"}]}], "}"}], "]"}], ",", | 
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|  | 104 | RowBox[{"Line", "[", | 
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|  | 105 | RowBox[{"{", | 
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|  | 106 | RowBox[{ | 
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|  | 107 | RowBox[{"{", | 
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|  | 108 | RowBox[{"0.5", ",", | 
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|  | 109 | RowBox[{"-", "0.5"}]}], "}"}], ",", | 
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|  | 110 | RowBox[{"{", | 
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|  | 111 | RowBox[{ | 
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|  | 112 | RowBox[{"-", "0.5"}], ",", "0.5"}], "}"}]}], "}"}], "]"}]}], | 
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|  | 113 | "}"}]}], ";"}]}], "Input", | 
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|  | 114 | AspectRatioFixed->True], | 
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|  | 115 |  | 
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|  | 116 | Cell["\<\ | 
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|  | 117 | Une fois toutes les parties du dessin d\[EAcute]finies, on indique l'ordre \ | 
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|  | 118 | dans lequel elles doivent \[EHat]tre dessin\[EAcute]es:\ | 
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|  | 119 | \>", "Text", | 
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|  | 120 | Evaluatable->False, | 
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|  | 121 | AspectRatioFixed->True], | 
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|  | 122 |  | 
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|  | 123 | Cell[BoxData[ | 
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|  | 124 | RowBox[{ | 
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|  | 125 | RowBox[{"pav\[EAcute]", "=", | 
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|  | 126 | RowBox[{"{", | 
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|  | 127 | RowBox[{"carr\[EAcute]", ",", "croix"}], "}"}]}], ";"}]], "Input", | 
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|  | 128 | AspectRatioFixed->True], | 
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|  | 129 |  | 
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|  | 130 | Cell[TextData[{ | 
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|  | 131 | StyleBox["Mathematica", | 
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|  | 132 | FontSlant->"Italic"], | 
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|  | 133 | " dessinera d'abord le carr\[EAcute] puis la croix. Changez l'ordre pour \ | 
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|  | 134 | voir la diff\[EAcute]rence ! \nRien ne sera dessin\[EAcute] \[AGrave] l'\ | 
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|  | 135 | \[EAcute]cran tant que vous ne direz pas \[AGrave] ", | 
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|  | 136 | StyleBox["Mathematica", | 
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|  | 137 | FontSlant->"Italic"], | 
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|  | 138 | " de le faire ! Voici l'instruction \[AGrave] utiliser:" | 
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|  | 139 | }], "Text", | 
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|  | 140 | Evaluatable->False, | 
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|  | 141 | AspectRatioFixed->True], | 
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|  | 142 |  | 
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|  | 143 | Cell[BoxData[ | 
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|  | 144 | RowBox[{"Show", "[", | 
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|  | 145 | RowBox[{ | 
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|  | 146 | RowBox[{"Graphics", "[", "pav\[EAcute]", "]"}], ",", | 
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|  | 147 | RowBox[{"AspectRatio", "\[Rule]", "Automatic"}]}], "]"}]], "Input", | 
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|  | 148 | AspectRatioFixed->True], | 
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|  | 149 |  | 
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|  | 150 | Cell["\<\ | 
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|  | 151 | (on peut r\[EAcute]duire ou agrandir de dessin en cliquant dessus et en \ | 
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|  | 152 | manipulant les poign\[EAcute]es).\ | 
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|  | 153 | \>", "Text"] | 
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|  | 154 | }, Open  ]], | 
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|  | 155 |  | 
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|  | 156 | Cell[CellGroupData[{ | 
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|  | 157 |  | 
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|  | 158 | Cell["R\[EAcute]p\[EAcute]tition du motif", "Subsubtitle"], | 
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|  | 159 |  | 
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|  | 160 | Cell[TextData[{ | 
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|  | 161 | "Le motif g\[EAcute]n\[EAcute]rique de pavage sera d\[EAcute]fini comme \ | 
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|  | 162 | suit. On doit d'abord donner les deux directions de translation (pour couvrir \ | 
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|  | 163 | un plan il faut deux directions). On peut faire une analogie avec les \ | 
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|  | 164 | machines \[AGrave] \[EAcute]crire. En tapant sur une touche, la touche \ | 
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|  | 165 | \"avance\" automatiquement d'un cran vers la droite; cela correspond pour \ | 
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|  | 166 | nous \[AGrave] notre direction ", | 
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|  | 167 | StyleBox["u", | 
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|  | 168 | FontFamily->"Courier", | 
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|  | 169 | FontWeight->"Bold"], | 
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|  | 170 | ". \[CapitalAGrave] la fin d'une ligne, on descend d'un cran avant de \ | 
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|  | 171 | recommencer une nouvelle ligne; c'est notre direction ", | 
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|  | 172 | StyleBox["v", | 
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|  | 173 | FontFamily->"Courier", | 
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|  | 174 | FontWeight->"Bold"], | 
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|  | 175 | ". Remarquez que les vecteurs ", | 
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|  | 176 | StyleBox["u", | 
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|  | 177 | FontFamily->"Courier", | 
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|  | 178 | FontWeight->"Bold"], | 
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|  | 179 | " et ", | 
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|  | 180 | StyleBox["v", | 
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|  | 181 | FontFamily->"Courier", | 
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|  | 182 | FontWeight->"Bold"], | 
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|  | 183 | " n'ont pas besoin d'\[EHat]tre perpendiculaires; ils doivent seulement \ | 
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|  | 184 | \[EHat]tre non colin\[EAcute]aires." | 
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|  | 185 | }], "Text", | 
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|  | 186 | Evaluatable->False, | 
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|  | 187 | AspectRatioFixed->True], | 
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|  | 188 |  | 
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|  | 189 | Cell[TextData[{ | 
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|  | 190 | "Comme notre dessin a une largeur de 2, on se d\[EAcute]calera de deux unit\ | 
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|  | 191 | \[EAcute]s vers la droite (", | 
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|  | 192 | StyleBox["u", | 
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|  | 193 | FontFamily->"Courier", | 
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|  | 194 | FontWeight->"Bold"], | 
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|  | 195 | "). Comme on a envie que nos dessins soient r\[EAcute]p\[EAcute]t\[EAcute]s \ | 
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|  | 196 | en quinconce, la direction ", | 
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|  | 197 | StyleBox["v", | 
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|  | 198 | FontFamily->"Courier", | 
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|  | 199 | FontWeight->"Bold"], | 
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|  | 200 | " indique que pour recommencer une ligne, on se d\[EAcute]calera d'un cran \ | 
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|  | 201 | vers la droite et de deux vers le haut par rapport \[AGrave] la ligne pr\ | 
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|  | 202 | \[EAcute]c\[EAcute]dente." | 
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|  | 203 | }], "Text", | 
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|  | 204 | Evaluatable->False, | 
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|  | 205 | AspectRatioFixed->True], | 
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|  | 206 |  | 
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|  | 207 | Cell[BoxData[ | 
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|  | 208 | RowBox[{ | 
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|  | 209 | RowBox[{"u", "=", | 
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|  | 210 | RowBox[{"{", | 
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|  | 211 | RowBox[{"2", ",", "0"}], "}"}]}], ";", | 
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|  | 212 | RowBox[{"v", "=", | 
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|  | 213 | RowBox[{"{", | 
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|  | 214 | RowBox[{"1", ",", "2"}], "}"}]}], ";"}]], "Input", | 
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|  | 215 | AspectRatioFixed->True], | 
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|  | 216 |  | 
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|  | 217 | Cell["\<\ | 
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|  | 218 | On d\[EAcute]finit maintenant le motif g\[EAcute]n\[EAcute]rique qui \ | 
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|  | 219 | permettra de paver notre plan:\ | 
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|  | 220 | \>", "Text", | 
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|  | 221 | Evaluatable->False, | 
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|  | 222 | AspectRatioFixed->True], | 
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|  | 223 |  | 
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|  | 224 | Cell[BoxData[ | 
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|  | 225 | RowBox[{ | 
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|  | 226 | RowBox[{"motif", "=", | 
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|  | 227 | RowBox[{"ReplaceAll", "[", | 
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|  | 228 | RowBox[{"pav\[EAcute]", ",", | 
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|  | 229 | RowBox[{ | 
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|  | 230 | RowBox[{"{", | 
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|  | 231 | RowBox[{ | 
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|  | 232 | RowBox[{"x_", "?", "NumberQ"}], ",", | 
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|  | 233 | RowBox[{"y_", "?", "NumberQ"}]}], "}"}], "\[Rule]", | 
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|  | 234 | RowBox[{"{", | 
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|  | 235 | RowBox[{ | 
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|  | 236 | RowBox[{"x", "+", | 
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|  | 237 | RowBox[{ | 
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|  | 238 | RowBox[{"u", "\[LeftDoubleBracket]", "1", "\[RightDoubleBracket]"}], | 
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|  | 239 | " ", "dx"}], "+", | 
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|  | 240 | RowBox[{ | 
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|  | 241 | RowBox[{"v", "\[LeftDoubleBracket]", "1", "\[RightDoubleBracket]"}], | 
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|  | 242 | " ", "dy"}]}], ",", | 
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|  | 243 | RowBox[{"y", "+", | 
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|  | 244 | RowBox[{ | 
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|  | 245 | RowBox[{"u", "\[LeftDoubleBracket]", "2", "\[RightDoubleBracket]"}], | 
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|  | 246 | " ", "dx"}], "+", | 
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|  | 247 | RowBox[{ | 
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|  | 248 | RowBox[{"v", "\[LeftDoubleBracket]", "2", "\[RightDoubleBracket]"}], | 
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|  | 249 | " ", "dy"}]}]}], "}"}]}]}], "]"}]}], ";"}]], "Input", | 
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|  | 250 | AspectRatioFixed->True], | 
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|  | 251 |  | 
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|  | 252 | Cell[TextData[{ | 
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|  | 253 | "La fonction ", | 
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|  | 254 | StyleBox["ReplaceAll", | 
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|  | 255 | FontFamily->"Courier", | 
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|  | 256 | FontWeight->"Bold"], | 
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|  | 257 | " remplace les coordonn\[EAcute]es ", | 
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|  | 258 | StyleBox["x", | 
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|  | 259 | FontFamily->"Courier", | 
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|  | 260 | FontWeight->"Bold"], | 
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|  | 261 | " par ", | 
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|  | 262 | StyleBox["x+u[[1]]dx+v[[1]]dy", | 
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|  | 263 | FontFamily->"Courier", | 
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|  | 264 | FontWeight->"Bold"], | 
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|  | 265 | " et les coordonn\[EAcute]es ", | 
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|  | 266 | StyleBox["y", | 
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|  | 267 | FontFamily->"Courier", | 
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|  | 268 | FontWeight->"Bold"], | 
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|  | 269 | " par ", | 
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|  | 270 | StyleBox["y+u[[2]]dx+v[[2]]dy", | 
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|  | 271 | FontFamily->"Courier", | 
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|  | 272 | FontWeight->"Bold"], | 
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|  | 273 | ". On peut maintenant cr\[EAcute]er une liste en faisant varier ", | 
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|  | 274 | StyleBox["dx", | 
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|  | 275 | FontFamily->"Courier", | 
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|  | 276 | FontWeight->"Bold"], | 
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|  | 277 | " et ", | 
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|  | 278 | StyleBox["dy", | 
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|  | 279 | FontFamily->"Courier", | 
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|  | 280 | FontWeight->"Bold"], | 
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|  | 281 | " entre 0 et le nombre de r\[EAcute]p\[EAcute]titions moins une que l'on \ | 
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|  | 282 | veut en horizontal et en vertical. Dans notre exemple, on a d\[EAcute]cid\ | 
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|  | 283 | \[EAcute] de r\[EAcute]p\[EAcute]ter 5 fois selon la direction ", | 
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|  | 284 | StyleBox["u", | 
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|  | 285 | FontFamily->"Courier", | 
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|  | 286 | FontWeight->"Bold"], | 
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|  | 287 | " et 4 fois selon la direction ", | 
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|  | 288 | StyleBox["v", | 
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|  | 289 | FontFamily->"Courier", | 
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|  | 290 | FontWeight->"Bold"], | 
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|  | 291 | ":" | 
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|  | 292 | }], "Text", | 
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|  | 293 | PageWidth->WindowWidth, | 
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|  | 294 | Evaluatable->False, | 
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|  | 295 | AspectRatioFixed->True], | 
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|  | 296 |  | 
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|  | 297 | Cell[BoxData[ | 
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|  | 298 | RowBox[{ | 
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|  | 299 | RowBox[{"pavage", "=", | 
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|  | 300 | RowBox[{"Table", "[", | 
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|  | 301 | RowBox[{"motif", ",", | 
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|  | 302 | RowBox[{"{", | 
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|  | 303 | RowBox[{"dx", ",", "0", ",", "4"}], "}"}], ",", | 
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|  | 304 | RowBox[{"{", | 
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|  | 305 | RowBox[{"dy", ",", "0", ",", "3"}], "}"}]}], "]"}]}], ";"}]], "Input", | 
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|  | 306 | AspectRatioFixed->True], | 
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|  | 307 |  | 
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|  | 308 | Cell["Dessinons enfin ce pavage :", "Text", | 
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|  | 309 | Evaluatable->False, | 
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|  | 310 | AspectRatioFixed->True], | 
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|  | 311 |  | 
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|  | 312 | Cell[BoxData[ | 
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|  | 313 | RowBox[{"Show", "[", | 
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|  | 314 | RowBox[{ | 
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|  | 315 | RowBox[{"Graphics", "[", "pavage", "]"}], ",", | 
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|  | 316 | RowBox[{"AspectRatio", "\[Rule]", "Automatic"}]}], "]"}]], "Input", | 
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|  | 317 | AspectRatioFixed->True], | 
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|  | 318 |  | 
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|  | 319 | Cell["\<\ | 
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|  | 320 | Vous trouverez ci-dessous trois pavages de difficult\[EAcute]s croissantes.\ | 
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|  | 321 | \>", "Text"], | 
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|  | 322 |  | 
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|  | 323 | Cell[CellGroupData[{ | 
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|  | 324 |  | 
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|  | 325 | Cell["Exemple 1 : le carrelage", "Subsection", | 
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|  | 326 | Evaluatable->False, | 
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|  | 327 | PageBreakAbove->True, | 
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|  | 328 | AspectRatioFixed->True], | 
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|  | 329 |  | 
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|  | 330 | Cell["\<\ | 
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|  | 331 | D'apr\[EGrave]s le travail de Pauline Bart, classe 1BD', mars 1997.\ | 
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|  | 332 | \>", "Text", | 
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|  | 333 | Evaluatable->False, | 
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|  | 334 | AspectRatioFixed->True], | 
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|  | 335 |  | 
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|  | 336 | Cell[BoxData[{ | 
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|  | 337 | RowBox[{ | 
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|  | 338 | RowBox[{"fond", "=", | 
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|  | 339 | RowBox[{"{", | 
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|  | 340 | RowBox[{ | 
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|  | 341 | RowBox[{"RGBColor", "[", | 
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|  | 342 | RowBox[{"0", ",", "0.8`", ",", "0.8`"}], "]"}], ",", | 
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|  | 343 | RowBox[{"Rectangle", "[", | 
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|  | 344 | RowBox[{ | 
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|  | 345 | RowBox[{"{", | 
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|  | 346 | RowBox[{ | 
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|  | 347 | RowBox[{"-", "1"}], ",", | 
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|  | 348 | RowBox[{"-", "1"}]}], "}"}], ",", | 
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|  | 349 | RowBox[{"{", | 
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|  | 350 | RowBox[{"2", ",", "2"}], "}"}]}], "]"}]}], "}"}]}], ";"}], "\n", | 
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|  | 351 | RowBox[{ | 
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|  | 352 | RowBox[{"carr\[EAcute]", "=", | 
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|  | 353 | RowBox[{"{", | 
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|  | 354 | RowBox[{ | 
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|  | 355 | RowBox[{"RGBColor", "[", | 
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|  | 356 | RowBox[{"1", ",", "0.5`", ",", "0"}], "]"}], ",", | 
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|  | 357 | RowBox[{"Rectangle", "[", | 
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|  | 358 | RowBox[{ | 
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|  | 359 | RowBox[{"{", | 
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|  | 360 | RowBox[{"0", ",", "0"}], "}"}], ",", | 
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|  | 361 | RowBox[{"{", | 
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|  | 362 | RowBox[{"1", ",", "1"}], "}"}]}], "]"}]}], "}"}]}], ";"}], "\n", | 
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|  | 363 | RowBox[{ | 
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|  | 364 | RowBox[{"triangleGauche", "=", | 
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|  | 365 | RowBox[{"{", | 
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|  | 367 | RowBox[{"RGBColor", "[", | 
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|  | 369 | RowBox[{"Polygon", "[", | 
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|  | 370 | RowBox[{"{", | 
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|  | 371 | RowBox[{ | 
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|  | 372 | RowBox[{"{", | 
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|  | 1059 | "R\[EAcute]alisez votre pavage en couleurs en vous inspirant des exemples 1 \ | 
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|  | 1060 | et 2.\n1. Sur une feuille de papier quadrill\[EAcute]e munie d'un \ | 
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|  | 1061 | rep\[EGrave]re cart\[EAcute]sien, dessinez un motif de votre choix.\n2. D\ | 
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|  | 1062 | \[EAcute]composez votre motif en sous-motifs et approchez ces formes par des \ | 
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|  | 1063 | polygones, des disques et des traits.\n3. Entrez les sous-motifs comme indiqu\ | 
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|  | 1064 | \[EAcute] dans les exemples en faisant attention \[AGrave] l'ordre.\n4. V\ | 
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|  | 1069 | " que le dessin entr\[EAcute] correspond bien \[AGrave] ce que vous \ | 
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|  | 1070 | attendiez.\n5. D\[EAcute]finissez les directions de translation ", | 
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|  | 1078 | " qui permettront de construire le pavage.\n6. Entrez la d\[EAcute]finition \ | 
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|  | 1083 | " (copy/paste en utilisant le nom de votre dessin).\n7. Entrez la \ | 
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