26-5 step prism

The 26-5 step prism is a convex isogonal polychoron, member of the step prism family. It has 26 tetragonal disphenoids and 156 phyllic disphenoids of three kinds as cells.

Vertex coordinates
Coordinates for the vertices of a 26-5 step prism of circumradius $\sqrt{2}$ are given by: where k is an integer from 0 to 25.
 * (sin(2πk/26), cos(2πk/26), sin(10πk/26), cos(10πk/26)),