- Exodus: 400 years after the Israelites’ migration to Egypt at the end of Genesis, a new pharaoh subjects them to slavery and has all their newborn children killed. One baby escapes and is found by pharaoh’s daughter and named Moses. As an adult, he kills an overseer for beating an Israelite and flees to the desert. He settles down into the life of a shepherd when he is called by God to liberate his brethren.
- Regular tetrahedron (Wikipedia)
A regular tetrahedron is a tetrahedron in which all four faces are equilateral triangles. In other words, all of its faces are the same size and shape (congruent) and all edges are the same length. A convex polyhedron in which all of its faces are equilateral triangles is the deltahedron. There are eight convex deltahedra, one of which is the regular tetrahedron.