Regular Tetrahedron

A regular tetrahedron is a regular polyhedron composed of 4 equally sized equilateral triangles.

Regular Tetrahedron

The regular tetrahedron is a regular triangular pyramid.

Unfold of a Regular Tetrahedron

Regular Tetrahedron

Characteristics of the Tetrahedron

Number of faces: 4.

Number of vertices: 4.

Number of edges: 6.

Number of concurrent edges at a vertex: 3.

Surface Area of a Regular Tetrahedron

Area of a Regular Tetrahedron Formula

Volume of a Regular Tetrahedron

Volume of a Regular Tetrahedron Formula


Example

Calculate the suface area and volume of a regular tetrahedron with an edge of 5 cm.

Tetrahedron Example

Tetrahedron Solution