How about the fact that there are no more than 5 platonic solids [1]? (See the proof in the article) 1: http://en.wikipedia.org/wiki/Platonic_solid http://en.w

How about the fact that there are no more than 5 platonic solids [1]? (See the proof in the article) 1: http://en.wikipedia.org/wiki/Platonic_solid http://en.wikipedia.org/wiki/Platonic_solid