# Circles through the Orthocenter

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The three circles through two vertices of a triangle and its orthocenter (the intersection of the triangle's altitudes) have the same radius as the circumcircle.

Contributed by: Jay Warendorff (March 2011)

Open content licensed under CC BY-NC-SA

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detailSectionParagraph## Permanent Citation

"Circles through the Orthocenter"

http://demonstrations.wolfram.com/CirclesThroughTheOrthocenter/

Wolfram Demonstrations Project

Published: March 7 2011