# Tetrahedron facts for kids

A **tetrahedron** (triangular pyramid) is a three-dimensional shape. It has four corners. It looks like a pyramid. It has six equally long edges, four corners and four equilateral triangular faces. Every two edges meet on one of those corners forming a sixty-degree angle. All of its sides are triangles.

## Formulas for a regular tetrahedron

A **regular tetrahedron** is a tetrahedron where all of its edges are the same length. If the length of an edge is *a*:

Surface area | |

Face area | |

Height | and |

Volume | and |

## Images for kids

## See also

In Spanish: Tetraedro para niños

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Tetrahedron Facts for Kids. *Kiddle Encyclopedia.*