DelaunayMesh

DelaunayMesh[{p1, p2, ...}] gives a MeshRegion representing the Delaunay mesh from the points p1, p2, ....

Examples

Create a 2D Delaunay triangulation:

pts = RandomReal[1, {20, 2}];
DelaunayMesh[pts]

3D Delaunay tetrahedralization:

pts3D = RandomReal[1, {50, 3}];
DelaunayMesh[pts3D]

Please visit the official Wolfram Language Reference for more details.