How Many Faces Does an Octahedron Have?

How Many Faces Does an Octahedron Have?

Octahedra have eight faces. The answer to this question actually lies in the shape's name because the prefix "octa-" means "eight."

An octahedron is a three-dimensional polyhedron with eight faces. All the faces on an octahedron will be congruent. The octahedron is one of a group of five polyhedron shapes known as Platonic solids, and it is the only one in the group with eight sides. A regular octahedron also has six vertices and 12 edges. A transparent model of an octahedron with all its correct vertices and edges will have three interior diagonals.