Posts from January 2009
Stellated Icosahedra
You can turn a piece of paper into a sort of puzzle piece in just a few quick folds. With 6 pieces, you can make a cube. With 12 pieces or 30 pieces, you can make pointy stars. (Mathematicians call them stellated icosahedra.) Making the pieces is simple, and assembling them into these shapes is easier than it looks.