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: where j = 2, 4, 6, 8, 10.
 * $$\left(±2\sin\frac\pi{11},0,1,0\right),$$
 * $$\left(±2\sin\frac\pi{11},0,\cos\left(\frac{j\pi}{11}\right),±\sin\left(\frac{j\pi}{11}\right)\right),$$
 * $$\left(±\sin\frac\pi{11},±\sqrt3\sin\frac\pi{11},1,0\right),$$
 * $$\left(±\sin\frac\pi{11},±\sqrt3\sin\frac\pi{11},\cos\left(\frac{j\pi}{11}\right),±\sin\left(\frac{j\pi}{11}\right)\right),$$

Representations
A hexagonal-hendecagonal duoprism has the following Coxeter diagrams:
 * x6o x11o (full symmetry)
 * x3x x11o (hexagons as ditrigons)