Square-hendecagrammic duoprism

The square-hendecagrammic duoprism, also known as the 4-11/3 duoprism, is a uniform duoprism that consists of 11 cube s and 4 hendecagrammic prism s, with 2 of each meeting at each vertex.

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

Coordinates
The coordinates of a square-hendecagrammic duoprism, centered at the origin and with edge length 2sin(3π/11), are given by:


 * (±sin(3π/11), ±sin(3π/11), 1, 0),
 * (±sin(3π/11), ±sin(3π/11), cos(2π/11), ±sin(2π/11)),
 * (±sin(3π/11), ±sin(3π/11), cos(4π/11), ±sin(4π/11)),
 * (±sin(3π/11), ±sin(3π/11), cos(6π/11), ±sin(6π/11)),
 * (±sin(3π/11), ±sin(3π/11), cos(8π/11), ±sin(8π/11)),
 * (±sin(3π/11), ±sin(3π/11), cos(10π/11), ±sin(10π/11)).