Gyroprism

A gyroprism is a polyhedron obtained as a chiral variant of an antiprism where the base polygons are offset by an angle other than that which gives an antiprism. Aside from the bases, an n-gonal gyroprism has 2n scalene triangles as faces, with the vertex figure being an irregular tetragon. They have the same symmetry as the ciral form of n-gon prism symmetry. The digonal gyroprism degenerates to a rhombic disphenoid.

Gyroprisms commmonly appear as cells in many families of isogonal polychora, such as swirlchora and step prisms.