Duoantiprism

A duoantiprism is an isogonal polytope formed from the alternation of a duoprism formed as the Cartesian product of two polytopes, if and and only if both base polytopes are alternable, and are generally nonunfiorm. The simplest non-trivial duoantiprism is the hexadecachoron (considered as a digonal duoantiprism), while the only uniform duoantiprisms are the hexadecachoron (and any demihypercube) and the great duoantiprism (pentagonal-pentagrammic crossed duoantiprism). The dual of a duoantiprism is a duoantitegum. They are also a special class of the duoprismatic swirlprisms, having only two polygonal rotations for each ring.

Special cases
In four dimensions, a duoantiprism can have the least possible edge length difference if both base polygons have the same edge length. This ensures that the digonal disphenoids become tetragonal disphenoids.