A prismatoid having planar sides and the same number of vertices in both of its parallel planes. The faces of a prismoid are therefore either trapezoids or parallelograms.
Ball and Coxeter (1987) use the term to describe an antiprism.
A prismatoid having planar sides and the same number of vertices in both of its parallel planes. The faces of a prismoid are therefore either trapezoids or parallelograms.
Ball and Coxeter (1987) use the term to describe an antiprism.
Weisstein, Eric W. "Prismoid." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Prismoid.html