Pentagonal antiprismatic symmetry

Pentagonal antiprismatic symmetry, also known as pappic symmetry and notated (I2(10)×A1)/2, is a 3D spherical symmetry group. It is the symmetry group of the pentagonal antiprism and is a subgroup of icosahedral symmetry.

Subgroups

 * (I2(10)+×A1)/2 (maximal)
 * (H2×A1)+ (maximal)
 * H2×I (maximal)
 * H2+×I
 * K2+×A1 (maximal)
 * K2+×I
 * ±(I×I×I)
 * A1×I×I
 * I×I×I

Convex polytopes with (G2×A1)/2 symmetry

 * Pentagonal antiprism (isogonal)/Pentagonal antitegum (isotopic)
 * Dipentagonal trapezoprism (isogonal)/Pentagonal scalenohedron (isotopic)