when prism is sliced by a plane that is not parallel to its bases. A truncated prism's bases are not congruent, and its sides are not parallelograms.

Twisted prism

A twisted prism is a nonconvex polyhedron constructed from a uniform -prism with each side face bisected on the square diagonal, by twisting the top, usually (but not necessarily) by radians ( degrees). If the bisectors are slanted to the left, then twisting

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