Hendecagrammic duoprism

The hendecagrammic duoprism, also known as the hendecagrammic-hendecagrammic duoprism, the 11/3 duoprism or the 11/3-11/3 duoprism, is a noble uniform duoprism that consists of 22 hendecagrammic prisms and 121 vertices.

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

Vertex coordinates
The vertex coordinates of a hendecagrammic duoprism, centered at the origin and with edge length 2sin(3π/11), are given by:
 * (1, 0, 1, 0),
 * (1, 0, cos(2π/11), ±sin(2π/11)),
 * (1, 0, cos(4π/11), ±sin(4π/11)),
 * (1, 0, cos(6π/11), ±sin(6π/11)),
 * (1, 0, cos(8π/11), ±sin(8π/11)),
 * (1, 0, cos(10π/11), ±sin(10π/11)),
 * (cos(2π/11), ±sin(2π/11), 1, 0),
 * (cos(2π/11), ±sin(2π/11), cos(2π/11), ±sin(2π/11)),
 * (cos(2π/11), ±sin(2π/11), cos(4π/11), ±sin(4π/11)),
 * (cos(2π/11), ±sin(2π/11), cos(6π/11), ±sin(6π/11)),
 * (cos(2π/11), ±sin(2π/11), cos(8π/11), ±sin(8π/11)),
 * (cos(2π/11), ±sin(2π/11), cos(10π/11), ±sin(10π/11)),
 * (cos(4π/11), ±sin(4π/11), 1, 0),
 * (cos(4π/11), ±sin(4π/11), cos(2π/11), ±sin(2π/11)),
 * (cos(4π/11), ±sin(4π/11), cos(4π/11), ±sin(4π/11)),
 * (cos(4π/11), ±sin(4π/11), cos(6π/11), ±sin(6π/11)),
 * (cos(4π/11), ±sin(4π/11), cos(8π/11), ±sin(8π/11)),
 * (cos(4π/11), ±sin(4π/11), cos(10π/11), ±sin(10π/11)),
 * (cos(6π/11), ±sin(6π/11), 1, 0),
 * (cos(6π/11), ±sin(6π/11), cos(2π/11), ±sin(2π/11)),
 * (cos(6π/11), ±sin(6π/11), cos(4π/11), ±sin(4π/11)),
 * (cos(6π/11), ±sin(6π/11), cos(6π/11), ±sin(6π/11)),
 * (cos(6π/11), ±sin(6π/11), cos(8π/11), ±sin(8π/11)),
 * (cos(6π/11), ±sin(6π/11), cos(10π/11), ±sin(10π/11)),
 * (cos(8π/11), ±sin(8π/11), 1, 0),
 * (cos(8π/11), ±sin(8π/11), cos(2π/11), ±sin(2π/11)),
 * (cos(8π/11), ±sin(8π/11), cos(4π/11), ±sin(4π/11)),
 * (cos(8π/11), ±sin(8π/11), cos(6π/11), ±sin(6π/11)),
 * (cos(8π/11), ±sin(8π/11), cos(8π/11), ±sin(8π/11)),
 * (cos(8π/11), ±sin(8π/11), cos(10π/11), ±sin(10π/11)),
 * (cos(10π/11), ±sin(10π/11), 1, 0),
 * (cos(10π/11), ±sin(10π/11), cos(2π/11), ±sin(2π/11)),
 * (cos(10π/11), ±sin(10π/11), cos(4π/11), ±sin(4π/11)),
 * (cos(10π/11), ±sin(10π/11), cos(6π/11), ±sin(6π/11)),
 * (cos(10π/11), ±sin(10π/11), cos(8π/11), ±sin(8π/11)),
 * (cos(10π/11), ±sin(10π/11), cos(10π/11), ±sin(10π/11)).