The first image shows a central yellow rhombic triacontahedron, with smaller, blue rhombic triacontahedra attached to each of its thirty-two vertices. The second polyhedron shown is the dual of the first one, with colors chosen by the number of sides per face in the second image — pentagons red, and triangles yellow. The convex hull of this second polyhedral complex shown would be an icosidodecahedron, itself the dual of the rhombic triacontahedron.

I use software called *Stella 4d: Polyhedron Navigator* to make the rotating polyhedral images on this blog. You can try *Stella *for yourself, for free, at http://www.software3d.com/Stella.php.

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