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. They can have 8 to 20 vertices and 18 to 30 edges.
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A dodecahedron can have 8 to 20 vertices.
A dodecahedron has 0 parallel faces
A dodecahedron need not have any triangular faces.
There are at least three faces at a vertex of a dodecahedron, and at most eleven.
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