pentagon decagon hexagon identity > Euclid

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pentagon decagon hexagon identity > golden ratio

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pentagon decagon hexagon identity > golden ratio identity

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pentagon decagon hexagon identity > golden ratio identity pythagorean

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pentagon decagon hexagon identity > golden triangle

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pentagon decagon hexagon identity > icosahedron

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pentagon decagon hexagon identity > icosahedron pentagon

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pentagon decagon hexagon identity > icosahedron triangles

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pentagon decagon hexagon identity > irregular icosahedron

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pentagon decagon hexagon identity > pentagon heights

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pentagon decagon hexagon identity > pentagon width

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