It applies to any convex solid with planar faces, and no holes (ie, not toroidal etc.) not just Platonic solids. I don't know whether it applies to concave shapes, though - Malcolm Farmer
It does apply to a large number of concave shapes. The convex assumption is too conservative. --Seb
I applies to all polyhedra that, when you "blow them up" and "smooth them out", look like a sphere. So the polyhedron can have "dents", because they will go away when "blowing up", but it cannot have holes like a torus for example. Also, like a sphere, the polyhedron has to be connected. --AxelBoldt
I believe that Paul Erdos surpassed Euler as Most Prolific Mathematician. Dominus 07:12 Apr 16, 2003 (UTC)
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