Dyadic symmetry

A1, also known as dyadic symmetry, is the only 1D Coxeter group. It coincides with B1 and is thus part of both the An and Bn infinite families. It represents a single reflection symmetry and is the symmetry group of the dyad.

Subgroups

 * I (maximal)

Convex polytopes with A1 symmetry

 * Dyad (regular)