29-12 step prism

The 29-12 step prism is a convex isogonal polychoron, member of the step prism family. It has 29 tetragonal disphenoids and 116 phyllic disphenoids of two kinds as cells.

Vertex coordinates
Coordinates for the vertices of a 29-12 step prism of circumradius $\sqrt{2}$ are given by: where k is an integer from 0 to 28.
 * (sin(2πk/29), cos(2πk/29), sin(24πk/29), cos(24πk/29)),