**Polygonal Geometric Array Illustration: Washington National Cathedral 1**

Washington National Cathedral, is a cathedral of the Episcopal Church located in Washington, D.C. Of Neo-Gothic design it is the sixth-largest cathedral in the world, the second-largest in the United States,
and one of the structures on the list of America's Favorite Architecture.
Source:
Wikipedia: America's Favorite Architecture.

**
Delaunay Triangulation**

A Delaunay triangulation for a set P of points in the plane is a triangulation such that no point in P is inside the circumcircle of any triangle in the triangulation. It can be shown that for all possible triangulations of P, a Delaunay triangulation maximizes the minimum angle of all angles of the triangles in the triangulation.
Thus, a Delaunay triangulation tends to avoid skinny triangles.

Delaunay triangulation is a good application of the
circumcircle
(circle which passes through the
three vertices of a triangle).