Protriangular antiprismatic symmetry

Protriangular antiprismatic symmetry
Rank	3
Space	Spherical
Order	6

Protriangular antiprismatic symmetry, also known as protrappic symmetry and notated as (G₂+×A₁)/2, is a 3D spherical symmetry group. It is the symmetry of the triangular antiprism if the bases are considered to have chiral rather than full triangular symmetry.

Subgroups

• Chiral triangular pyramidal symmetry (maximal)
• Inversion symmetry (maximal)
• Identity symmetry

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

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