Triangular-decagrammic duoprism

The triangular-decagrammic duoprism, also known as tistadedip or the 3-10/3 duoprism, is a uniform duoprism that consists of 10 triangular prism s and 3 decagrammic prism s, with 2 of each meeting at each vertex.

Coordinates
The coordinates of a triangular-decagrammic duoprism, centered at the origin and with unit edge length, are given by:


 * (0, √3/3, ±1/2, ±√(5–2√5)/2),
 * (0, √3/3, ±(3–√5)/4, ±√(5–√5)/8),
 * (0, √3/3, ±(√5–1)/2, 0),
 * (±1/2, –√3/6, ±1/2, ±√(5–2√5)/2),
 * (±1/2, –√3/6, ±(3–√5)/4, ±√(5–√5)/8),
 * (±1/2, –√3/6, ±(√5–1)/2, 0).