A Tetrahedral Array of Pulsating Tetrahedra

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I created this using Stella 4d: Polyhedron Navigator. You may try this software, for free, at http://www.software3d.com/Stella.php.

One of Many Faceted Versions of the Great Rhombicosidodecahedron

The great rhombicosidodecahedron is also known as the truncated icosidodecahedron. I created this faceting of it using Stella 4d: Polyhedron Navigator, which you can try for free at http://www.software3d.com/Stella.php.

An Unusual Non-Convex Polyhedron

To make this polyhedron using Stella 4d, which you can try for free at http://www.software3d.com/Stella.php, I started with the cuboctahedron. I next dropped the symmetry of the model down from octahedral to tetrahedral, and then I stellated it 54 times.