Inversion symmetry (3D)

A1+×A1/2, also known as inversic symmetry, is a 3D spherical Coxeter group. It is the symmetry group of the parallelepiped and corresponds to central inversion symmetry with no additional symmetries.. It is a subgroup of octahedral and icosahedral symmetry, but not tetrahedral symmetry.

Subgroups

 * I×I×I