Point-set triangulation
A triangulation of a set of points P {\displaystyle {\mathcal {P}}} in the Euclidean space R d {\displaystyle \mathbb {R} ^{d}} is a simplicial complex that covers the convex hull of P {\displaystyle {\mathcal {P}}} , and whose vertices belong to P {\displaystyle {\mathcal {P}}} . In the plane (when P {\displaystyle {\mathcal {P}}} is a set of points in R 2 {\displaystyle \mathbb {R} ^{2}} ), triangulations are made up of triangles, together with their edges and vertices.