Pentagrammic prism

The pentagrammic prism, or stip, is a prismatic uniform polyhedron. It consists of 2 pentagrams and 5 squares. Each vertex joins one pentagram and two squares. As the name suggests, it is a prism based on a pentagram.

Vertex coordinates
A pentagrammic prism of edge length 1 has vertex coordinates given by:
 * $$\left(±\frac12,\,-\sqrt{\frac{5-2\sqrt5}{20}},\,±\frac12\right),$$
 * $$\left(±\frac{\sqrt5-1}{4},\,\sqrt{\frac{5+\sqrt5}{40}},\,±\frac12\right),$$
 * $$\left(0,\,-\sqrt{\frac{5-\sqrt5}{10}},\,±\frac12\right).$$

Related polyhedra
Two non-prismatic uniform polyhedron compounds are composed of pentagrammic prisms:


 * Great chirorhombidodecahedron (6)
 * Great disrhombidodecahedron (12)

There are also an infinite amount of prismatic uniform compounds that are the prisms of compounds of pentagrams.