7-2 step prism

The 7-2 step prism is a convex isogonal polychoron, member of the step prism family. It has 14 phyllic disphenoids of two different types as cells, 8 joining at each vertex. It is the simplest step prism, excluding the pentachoron and the triangular duotegum, which are part of more specific families. It is also the triangular funk tegum.

Isogonal derivatives
Substitution by vertices of these following elements will produce these convex isogonal polychora:
 * Phyllic disphenoid (7): 7-2 step prism
 * Scalene triangle (7): 7-2 step prism
 * Scalene triangle (14): 14-3 step prism
 * Edge (7): 7-2 step prism