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Tangrams

Avec cet ensemble de trois tangrams (dissection est le terme mathématique), vous pouvez créer le tangram de n'importe quel polygone: Tout polygone peut-être triangulé, puis tout triangle peut être carré, et deux carrés peuvent décomposer un unique carré plus gros. Il manque simplement l'idée que, de deux tangrams d'une même pièce, on peut faire un tangram plus fin, en intersectant les pièces de l'un des tangrams avec l'autre. Basé sur une conférence de Vincent Borrelli. Suivent plusieurs "tangrams de Pythagore".

Tangram d'Abul Wafa

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AbulWafa.ggb (5kb)

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Tangram de Périgal: de rectangle à carré

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Perigal.ggb (6kb)

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Tangram de Pythagore

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Pythagore.ggb (8kb)

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Tangram de Perigal du rectangle au carré

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TangramPerigal.ggb (5kb)

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Tangram de Pythagore

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TangramPythagore1.ggb (8kb)

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Tangram de Liu Hui

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TangramPythagore2.ggb (8kb)

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Tangram de Pythagore

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TangramPythagore4.ggb (9kb)

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Tangram de Pythagore

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TangramPythagore3.ggb (9kb)

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Tangram de Pythagore par soustraction d'aires

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TangramPythagore5.ggb (9kb)

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Tangram Gougu

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TangramPythagore2Gougu.ggb (7kb)

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Tangram de Pythagore, carré + carré = carré = carré + rectangle

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TangramPythagore6.ggb (8kb)

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Carré + Carré = Carré

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TangramPythagore6PourquoiLesMaths.ggb (7kb)

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Aire d'un parallélogramme

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TangramAireParallelogramme.ggb (17kb)

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Aire d'un parallélogramme avec pièce en plus

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TangramAireParallelogrammeBrest.ggb (15kb)

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Azulejos 42=43=44=45

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Azulejos.ggb (8kb)

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Tangram 64=65

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6465.ggb (6kb)

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