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 Description  
 Icosahedron:  A regular polyhedron whose twenty faces are congruent equilateral triangles.
An icosahedron is one of only 5 Platonic Solids. The other 4 are the tetrahedron, cube, octahedron, and dodecahedron.

An icosahedron has 20 faces, 30 edges, and 12 vertices. This is an icosahedron.

To play with an icosahedron interactively, Click Here