Hexagonal duoantiprism

The hexagonal duoantiprism, also known as the hexagonal-hexagonal duoantiprism, the 6 duoantiprism or the 6-6 duoantiprism, is a convex isogonal polychoron that consists of 24 hexagonal antiprisms and 72 tetragonal disphenoids obtained through the process of alternating the dodecagonal duoprism. However, it cannot be made uniform. Together with its dual, it is the first in an infinite family of hexagonal antiprismatic swirlchora.

The ratio between the longest and shortest edges is 1:(1+$\sqrt{3}$)/2 ≈ 1:1.36603.