Rectangular symmetry

Rectangular symmetry, also known as rectic symmetry or digonal symmetry and notated K2, is a 2D spherical Coxeter group. It is the symmetry group of the rectangle, with two rotations and two reflections. Any even-sided polygon has this as a subsymmetry.

Subgroups

 * Inversion symmetry (maximal)
 * Reflection symmetry (maximal)
 * Identity symmetry

Convex polytopes with K2 symmetry

 * Rectangle (isogonal)/Rhombus (isotopic)