# octahedron

An octahedron is a shape that is made up of eight triangular pieces. It's often used to represent the eight directions that are important in geometry.

An octahedron is a shape that is made up of eight triangular pieces. It's often used to represent the eight directions that are important in geometry.

noun

any polyhedron having eight plane faces

1

The cube is dual to the

**octahedron.**2

The

**octahedron**is the dual polyhedron to the cube.3

It's the same thing with the

**octahedron.**4

Compound of cube and

**octahedron.**5

Its dual is the truncated

**octahedron.**6

A polyhedron with eight faces is an

**octahedron.**7

The

**octahedron**is also a 'rectified tetrahedron'.8

The

**octahedron**is also a rectified tetrahedron .9

It suffices to state that the cube is the dual of the

**octahedron.**10

The cuboctahedron is a rectified cube and also a rectified

**octahedron.**