Hexagonal-hendecagonal duoprism

The hexagonal-hendecagonal duoprism or hahendip, also known as the 6-11 duoprism, is a uniform duoprism that consists of 6 hendecagonal prisms and 11 hexagonal prisms, with two of each joining at each vertex.

Vertex coordinates
The coordinates of a hexagonal-hendecagonal duoprism, centered at the origin and with edge length 2sin(π/11), are given by:
 * (±2sin(π/11), 0, 1, 0),
 * (±2sin(π/11), 0, cos(2π/11), ±sin(2π/11)),
 * (±2sin(π/11), 0, cos(4π/11), ±sin(4π/11)),
 * (±2sin(π/11), 0, cos(6π/11), ±sin(6π/11)),
 * (±2sin(π/11), 0, cos(8π/11), ±sin(8π/11)),
 * (±2sin(π/11), 0, cos(10π/11), ±sin(10π/11)),
 * (±sin(π/11), ±sin(π/11)$\sqrt{3}$, 1, 0),
 * (±sin(π/11), ±sin(π/11)$\sqrt{2}$, cos(2π/11), ±sin(2π/11)),
 * (±sin(π/11), ±sin(π/11)$\sqrt{3}$, cos(4π/11), ±sin(4π/11)),
 * (±sin(π/11), ±sin(π/11)$\sqrt{3}$, cos(6π/11), ±sin(6π/11)),
 * (±sin(π/11), ±sin(π/11)$\sqrt{3}$, cos(8π/11), ±sin(8π/11)),
 * (±sin(π/11), ±sin(π/11)$\sqrt{3}$, cos(10π/11), ±sin(10π/11)).

Representations
A hexagonal-hendecagonal duoprism has the following Coxeter diagrams:


 * x6o x11o (full symmetry)
 * x3x x11o (hexagons as ditrigons)