👉 Ditetrahedral is a term used in mathematics and physics that refers to a shape formed by three tetrahedra. It's also called a triangular prism, because it has a triangular base and rectangular sides. In this case, the three tetrahedra are arranged as follows: 1. Tetrahedron (3-sided) 2. Pyramid (4-sided) The term "ditetrahedral" means "three-sided".