Use "hexahedron|hexahedra|hexahedrons" in a sentence

1. The Cube is the Platonic solid (also called the regular hexahedron)

2. Cube, in Euclidean geometry, a regular solid with six square faces; that is, a regular hexahedron

3. 19 A convenient and applied geometric transformation function, which is suit for interface of quadrangle or hexahedron, is proposed.