Heptagonal-hendecagonal duoprism

The heptagonal-hendecagonal duoprism or hehendip, also known as the 7-11 duoprism, is a uniform duoprism that consists of 7 hendecagonal prisms, 11 heptagonal prisms and 77 vertices.

Vertex coordinates
The coordinates of a heptagonal-hendecagonal duoprism, centered at the origin and with edge length 4sin(π/7)sin(π/11), are given by:
 * (2sin(π/11), 0, 2sin(π/7), 0),
 * (2sin(π/11), 0, 2sin(π/7)cos(2π/11), ±2sin(π/7)sin(2π/11)),
 * (2sin(π/11), 0, 2sin(π/7)cos(4π/11), ±2sin(π/7)sin(4π/11)),
 * (2sin(π/11), 0, 2sin(π/7)cos(6π/11), ±2sin(π/7)sin(6π/11)),
 * (2sin(π/11), 0, 2sin(π/7)cos(8π/11), ±2sin(π/7)sin(8π/11)),
 * (2sin(π/11), 0, 2sin(π/7)cos(10π/11), ±2sin(π/7)sin(10π/11)),
 * (2sin(π/11)cos(2π/7), ±2sin(π/11)sin(2π/7), 2sin(π/7), 0),
 * (2sin(π/11)cos(2π/7), ±2sin(π/11)sin(2π/7), 2sin(π/7)cos(2π/11), ±2sin(π/7)sin(2π/11)),
 * (2sin(π/11)cos(2π/7), ±2sin(π/11)sin(2π/7), 2sin(π/7)cos(4π/11), ±2sin(π/7)sin(4π/11)),
 * (2sin(π/11)cos(2π/7), ±2sin(π/11)sin(2π/7), 2sin(π/7)cos(6π/11), ±2sin(π/7)sin(6π/11)),
 * (2sin(π/11)cos(2π/7), ±2sin(π/11)sin(2π/7), 2sin(π/7)cos(8π/11), ±2sin(π/7)sin(8π/11)),
 * (2sin(π/11)cos(2π/7), ±2sin(π/11)sin(2π/7), 2sin(π/7)cos(10π/11), ±2sin(π/7)sin(10π/11)),
 * (2sin(π/11)cos(4π/7), ±2sin(π/11)sin(4π/7), 2sin(π/7), 0),
 * (2sin(π/11)cos(4π/7), ±2sin(π/11)sin(4π/7), 2sin(π/7)cos(2π/11), ±2sin(π/7)sin(2π/11)),
 * (2sin(π/11)cos(4π/7), ±2sin(π/11)sin(4π/7), 2sin(π/7)cos(4π/11), ±2sin(π/7)sin(4π/11)),
 * (2sin(π/11)cos(4π/7), ±2sin(π/11)sin(4π/7), 2sin(π/7)cos(6π/11), ±2sin(π/7)sin(6π/11)),
 * (2sin(π/11)cos(4π/7), ±2sin(π/11)sin(4π/7), 2sin(π/7)cos(8π/11), ±2sin(π/7)sin(8π/11)),
 * (2sin(π/11)cos(4π/7), ±2sin(π/11)sin(4π/7), 2sin(π/7)cos(10π/11), ±2sin(π/7)sin(10π/11)),
 * (2sin(π/11)cos(6π/7), ±2sin(π/11)sin(6π/7), 2sin(π/7), 0),
 * (2sin(π/11)cos(6π/7), ±2sin(π/11)sin(6π/7), 2sin(π/7)cos(2π/11), ±2sin(π/7)sin(2π/11)),
 * (2sin(π/11)cos(6π/7), ±2sin(π/11)sin(6π/7), 2sin(π/7)cos(4π/11), ±2sin(π/7)sin(4π/11)),
 * (2sin(π/11)cos(6π/7), ±2sin(π/11)sin(6π/7), 2sin(π/7)cos(6π/11), ±2sin(π/7)sin(6π/11)),
 * (2sin(π/11)cos(6π/7), ±2sin(π/11)sin(6π/7), 2sin(π/7)cos(8π/11), ±2sin(π/7)sin(8π/11)),
 * (2sin(π/11)cos(6π/7), ±2sin(π/11)sin(6π/7), 2sin(π/7)cos(10π/11), ±2sin(π/7)sin(10π/11)).