Paper Tetrahedron
Tetrahedron:
Number of faces: 4
Number of edges: 6
Number of vertices: 4
The tetrahedron is one of the 5 Platonic Solids (convex regular polyhedra). The model is made of 4 equilateral triangular faces.
The large version of the tetrahedron has a circumscribed sphere diameter of 24 cm (9.5 inches).