Octagrammic-hendecagonal duoprism

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

Vertex coordinates
The coordinates of an octagrammic-hendecagonal duoprism, centered at the origin and with edge length 2sin(π/11), are given by:
 * (±sin(π/11)($\sqrt{2–√2}$–1), ±sin(π/11), 1, 0),
 * (±sin(π/11)($\sqrt{2}$–1), ±sin(π/11), cos(2π/11), ±sin(2π/11)),
 * (±sin(π/11)($\sqrt{(2–√2)/2+1/[4sin^{2}(π/11)]}$–1), ±sin(π/11), cos(4π/11), ±sin(4π/11)),
 * (±sin(π/11)($\sqrt{2}$–1), ±sin(π/11), cos(6π/11), ±sin(6π/11)),
 * (±sin(π/11)($\sqrt{2}$–1), ±sin(π/11), cos(8π/11), ±sin(8π/11)),
 * (±sin(π/11)($\sqrt{2}$–1), ±sin(π/11), cos(10π/11), ±sin(10π/11)),
 * (±sin(π/11), ±sin(π/11)($\sqrt{2}$–1), 1, 0),
 * (±sin(π/11), ±sin(π/11)($\sqrt{2}$–1), cos(2π/11), ±sin(2π/11)),
 * (±sin(π/11), ±sin(π/11)($\sqrt{2}$–1), cos(4π/11), ±sin(4π/11)),
 * (±sin(π/11), ±sin(π/11)($\sqrt{2}$–1), cos(6π/11), ±sin(6π/11)),
 * (±sin(π/11), ±sin(π/11)($\sqrt{2}$–1), cos(8π/11), ±sin(8π/11)),
 * (±sin(π/11), ±sin(π/11)($\sqrt{2}$–1), cos(10π/11), ±sin(10π/11)).