prismoid

A prismatoid having polygons with the same number of sides as bases, and faces that are parallelograms or trapezoids.

A body that approaches to the form of a prism; a prismatoid.

A prismatoid whose base and top have the same number of sides, and every corresponding pair parallel. See prismatoid, 1.

A body that approaches to the form of a prism.

A prismatoid that has planar sides, and the same number of vertices in both of its parallel planes

An antiprism

a prismatoid whose bases are polygons having the same number of sides and whose other faces are trapezoids or parallelograms