Square antiprismatic symmetry

Square antiprismatic symmetry, also known as squappic symmetry and notated (I2(8)×A1)/2, is a 3D spherical symmetry group. It is the symmetry group of the square antiprism.

Subgroups

 * (I2(8)+×A1)/2 (maximal)
 * (B2×A1)+ (maximal)
 * B2×I (maximal)
 * B2+×I
 * K2+×I
 * A1×I×I
 * I×I×I

Convex polytopes with (I2(8)×A1)/2 symmetry

 * Square antiprism (isogonal)/Square antitegum (isotopic)
 * Ditetrgonal trapezoprism (isogonal)/Square scalenohedron (isotopic)