Paper Octahedron
Octahedron:
Number of faces: 8
Number of edges: 12
Number of vertices: 6
The octahedron is one of the 5 Platonic Solids (convex regular polyhedra). The model is made of 8 equilateral triangular faces.
The large version of the octahedron has a circumscribed sphere diameter of 24 cm (9.5 inches).