On this tan cut and folded paper model, a small star pyramid has a pentagram as base. Edges of the pentagram also are sides of surrounding irregular pentagons – five of these pentagons are in the same ...

This cut, folded, and glued tan paper model is a polyhedron of some complexity. At the top, at the bottom, and on all four sides is a figure with faces that are two irregular pentagons and four small ...