Tetrahedra: meaning, definitions and examples

geometric shape

A tetrahedron is a polyhedron with four triangular faces, six edges, and four vertices. It is one of the simplest three-dimensional shapes in geometry. Tetrahedra can be regular, where all faces are equilateral triangles, or irregular, with varying side lengths and angles. They are commonly studied in mathematics and are also relevant in fields such as chemistry, where they describe molecular shapes.

tetrahedral structure, triangular pyramid

Examples of usage

• The molecule has a tetrahedral geometry.

• A tetrahedron can be used to teach basic geometry.

• They built a model of a tetrahedron for the project.

• In crystallography, the tetrahedron is an important shape.