5-cell (vertex-cell first)
5-cell
This is the cell-first (tetrahedron-first) and also the vertex-first orthographic projection of the 5-cell into 3-space. It is one of the six convex regular polychora (4-dimensional version of the Platonic solids). It contains 5 tetrahedral cells, 10 equilateral triangles, 10 edges, and 5 vertices with a tetrahedral vertex figure.