Rectangular pyramidal symmetry

A1×A1×I, also known as rectpyric symmetry, digonal pyramidal symmetry, or rectangular pyramidal symmetry, is a 3D spherical Coxeter group. It is the symmetry group of the rectangular pyramid, and corresponds to 2D rectangular symmetry with no additional elements. It is the digonal member of the family of pyramidal symmetries.

Subgroups

 * A1×A1+×I
 * A1×I×I
 * I×I×I