Definition:Tetra-/Examples

Examples of Use of Tetra-
The prefix tetra- can be found in the following contexts:


 * tetrad: a set or ordered tuple with $4$ elements


 * tetragon: a less-common name than quadrilateral for a polygon with $4$ sides and hence $4$ vertices


 * tetrahedron: a polyhedron with $4$ faces


 * tetravalent predicate: a predicate with a valency of $4$