Hendecagonal antiprism

The hendecagonal antiprism or henap is a prismatic uniform polyhedron. It consists of 22 triangles and 2 hendecagons. Each vertex joins one hendecagon and three triangles. As the name suggests, it is an antiprism based on a hendecagon.

Representations
A hendecagonal antiprism has the following Coxeter diagrams:


 * s2s22o (alternated icosidigonal prism)
 * s2s11s (alternated dihendecagonal prism)
 * xo11ox&#x (bases considered separately)