Inversion symmetry (2D)

Inversion symmetry (2D)
Rank	2
Space	Spherical
Order	2

Two-dimensional inversion symmetry, also known as essic symmetry or chiral digonal symmetry and notated as K₂+, is a 2D spherical symmetry group. It is the symmetry group of the parallelogram and corresponds to central inversion symmetry. It can be considered the digonal member of the family of chiral polygonal symmetries. It is a subsymmetry of any even polygonal symmetry.

Subgroups

• Identity symmetry (normal, maximal)