Protriangular antiprismatic symmetry

(G2+×A1)/2, also known as protrappic symmetry or protriangular antiprismatic symmetry, is a 3D spherical Coxeter group.

Subgroups

 * A2+×I
 * ±(I×I×I)
 * I×I×I

Convex polytopes with (G2+×A1)/2 symmetry

 * Triangular antiprism (isogonal)/Triangular antitegum (isotopic)