I made this using Stella 4d, which you can try for free at this website.
A Polyhedron With Tetrahedral Symmetry, a Dozen Regular Heptagons, and a Whole Mess of Triangles
RobertLovesPi.net
Polyhedra, tessellations, and more.
I made this using Stella 4d, which you can try for free at this website.
RobertLovesPi.net 