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A dodecahedron is a generic term which describes a 3-dimensional shape with 12 polygonal shapes. There are approx 6.4 million topologically different convex dodecahedra plus concave ones. There are at least three of these in which all faces are triangles. At the other extreme, it can be an endecagon (11-gon) based pyramid with 11 triangles. So a face can be any polygon with 3 to 11 sides.

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9y ago

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