Triangular antiprismatic symmetry

G2×A1/2, also known as trappic symmetry or triangular antiprismatic symmetry, is a 3D spherical Coxeter group. It is the symmetry group of the triangular antiprism and is a subgroup of octahedral and icosahedral symmetry.

Subgroups

 * G2+×A1/2
 * A2×A1+
 * A2×I
 * A2+×I
 * A1×A1+×A1
 * A1×A1+×I
 * A1×A1+×A1/2
 * A1×I×I
 * I×I×I

Convex polytopes with BC2×A1/2 symmetry

 * Triangular antiprism (isogonal)/Triangular antitegum (isotopic)
 * Ditrigonal trapezoprism (isogonal)/Trigonal scalenohedron (isotopic)