Wolfram Demonstrations Project

A triangle is divided by its three medians into six smaller triangles. Their circumcenters lie on a circle.

For more information, see:

F. van Lamoen, "Circumcenters on a Circle: 10830," The American Mathematical Monthly 109(4), 2002 pp. 396-397.

Contributed by: Jay Warendorff

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Concyclic Circumcenters