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A Collinearity from the Medial and Excentral Triangles


	Let ABC be a triangle with excentral triangle A'B'C'. Let H be the orthocenter of ABC, I the incenter of the medial triangle of ABC, and O the circumcenter of A'B'C'. Then H, I, and O are collinear and I bisects HO.


	Contributed by: Jay Warendorff

"A Collinearity from the Medial and Excentral Triangles" from The Wolfram Demonstrations Project
http://demonstrations.wolfram.com/ACollinearityFromTheMedialAndExcentralTriangles/

Contributed by: Jay Warendorff

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