15-5 gyrochoron

The 15-5 gyrochoron, also known as the trigon pentacoil, is a convex isochoric polychoron with 15 tetragonal antiwedges as cells.

Isogonal derivatives
Substitution by vertices of these following elements will produce these convex isogonal polychora:
 * Tetragonal antiwedge (15): 15-5 step prism
 * Kite (15): 15-5 step prism
 * Isosceles triangle (15): 15-5 step prism
 * Edge (15): 15-5 step prism
 * Edge (30): 30-5 step prism
 * Vertex (15): 15-5 step prism