Relationship With The Voronoi Diagram
The Delaunay triangulation of a discrete point set P in general position corresponds to the dual graph of the Voronoi tessellation for P. Special cases include the existence of three points on a line and four points on circle.
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The Delaunay triangulation with all the circumcircles and their centers (in red).
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Connecting the centers of the circumcircles produces the Voronoi diagram (in red).
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