[next] [prev] [up] Date: Wed, 31 Dec 80 15:11:00 -0500 (EST)
[next] [prev] [up] From: Guy Steele <Guy.Steele@CMU-10A >
~~~ ~~~ [up] Subject: Icosahedron

The icosahedron has twenty faces, not twelve. It and the
dodecahedron are duals: each has the same number of vertices
as the other has faces. If you join the centers of the faces
of one with lines, you get the other. They have the same
number of edges.

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