Gyroelongated bicupola

In geometry, the gyroelongated bicupolae are an infinite sets of polyhedra, constructed by adjoining two n-gonal cupolas to an n-gonal Antiprism. The triangular, square, and pentagonal gyroelongated bicupola are three of five Johnson solids which are chiral, meaning that they have a "left-handed" and a "right-handed" form.

Adjoining two triangular prisms to a cube also generates a polyhedron, but has adjacent parallel faces, so is not a Johnson solid. The hexagonal form is also a polygon, but has coplanar faces. Higher forms can be constructed without regular faces.