Heptagonal symmetry

Heptagonal symmetry, also known as heggic symmetry and notated as I2(7), is a 2D spherical Coxeter group. It is the symmetry group of the heptagon, with 7 rotation and 7 reflection elements.

Subgroups

 * Chiral heptagonal symmetry (maximal)
 * Reflection symmetry (maximal)
 * Identity symmetry

Convex polytopes with I2(7) symmetry

 * Heptagon (regular)
 * Diheptagon (isogonal)/Heptambus (isotopic)