Rectangular symmetry

K2, also known as rectic symmetry, rectangular symmetry, or digonal symmetry, 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

 * K2+ (maximal)
 * A1×I (maximal)
 * I×I

Convex polytopes with K2 symmetry

 * Rectangle (isogonal)/Rhombus (isotopic)