Prodigonal antiprismatic symmetry

Prodigonal antiprismatic symmetry, also known as prodappic symmetry and notated (B2+×A1)/2 or (BC2+×A1)/2, is a 3D spherical symmetry group. It is the symmetry group of the tetragonal disphenoid if the top and bottom edges are regarded as having chiral digonal rather tha full igonal symmetry.

Subgroups

 * K2+×I (maximal)
 * I×I×I

Convex polytopes with (BC2+×A1)/2 symmetry

 * Tetragonal disphenoid (noble)