Decagonal-hendecagonal duoprism

The decagonal-hendecagonal duoprism or dahendip, also known as the 10-11 duoprism, is a uniform duoprism that consists of 10 hendecagonal prisms and 11 decagonal prisms, with two of each joining at each vertex.

Vertex coordinates
The coordinates of a decagonal-hendecagonal duoprism, centered at the origin and with edge length 2sin(π/11), are given by: where j = 2, 4, 6, 8, 10.
 * $$\left(±\sin\frac\pi{11},±\sqrt{5+2\sqrt5}\sin\frac\pi{11},1,0\right),$$
 * $$\left(±\sin\frac\pi{11},±\sqrt{5+2\sqrt5}\sin\frac\pi{11},\cos\left(\frac{j\pi}{11}\right),±\sin\left(\frac{j\pi}{11}\right)\right),$$
 * $$\left(±\frac{3+\sqrt5}2\sin\frac\pi{11},±\sqrt{\frac{5+\sqrt5}2}\sin\frac\pi{11},1,0\right),$$
 * $$\left(±\frac{3+\sqrt5}2\sin\frac\pi{11},±\sqrt{\frac{5+\sqrt5}2}\sin\frac\pi{11},\cos\left(\frac{j\pi}{11}\right),±\sin\left(\frac{j\pi}{11}\right)\right),$$
 * $$\left(\left(1+\sqrt5\right)\sin\frac\pi{11},0,1,0\right),$$
 * $$\left(\left(1+\sqrt5\right)\sin\frac\pi{11},0,\cos\left(\frac{j\pi}{11}\right),±\sin\left(\frac{j\pi}{11}\right)\right),$$

Representations
A decagonal-hendecagonal duoprism has the following Coxeter diagrams:
 * x10 x11o (full symmetry)
 * x5x x11o (decagons as dipentagons)