Octagrammic-hendecagrammic duoprism

The octagrammic-hendecagrammic duoprism, also known as the 8/3-11/3 duoprism, is a uniform duoprism that consists of 11 octagrammic prisms and 8 hendecagrammic prisms, with 2 of each at each vertex.

The name can also refer to the octagrammic-small hendecagrammic duoprism, the octagrammic-great hendecagrammic duoprism, or the octagrammic-grand hendecagrammic duoprism.

Vertex coordinates
The coordinates of an octagrammic-hendecagrammic duoprism, centered at the origin and with edge length 2sin(3π/11), are given by: where j = 2, 4, 6, 8, 10.
 * $$\left(±\sin\frac{3\pi}{11},\,±\left(\sqrt2-1\right)\sin\frac{3\pi}{11},\,1,\,0\right),$$
 * $$\left(±\sin\frac{3\pi}{11},\,±\left(\sqrt2-1\right)\sin\frac{3\pi}{11},\,\cos\left(\frac{j\pi}{11}\right),\,±\sin\left(\frac{j\pi}{11}\right)\right),$$
 * $$\left(±\left(\sqrt2-1\right)\sin\frac{3\pi}{11},\,±\sin\frac{3\pi}{11},\,1,\,0\right),$$
 * $$\left(±\left(\sqrt2-1\right)\sin\frac{3\pi}{11},\,±\sin\frac{3\pi}{11},\,\cos\left(\frac{j\pi}{11}\right),\,±\sin\left(\frac{j\pi}{11}\right)\right),$$