1999-05-01 09:00:00+02 by Dan Lyke 0 comments
What's a Szlassi polyhedron? It's a toroidal heptahedron, an example of the smallest number of faces (7) with which one can construct a topological toroid. It also shows that with a map on a toroid you need at least 7 colors. Grab the cardboard and scissors and impress your friends.
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