The Distance to the Orthocenter from a Vertex
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Let ABC be a triangle and H its orthocenter. Let O and be the circumcenter and circumradius of ABC. Then .
Contributed by: Jay Warendorff (March 2011)
Open content licensed under CC BY-NC-SA
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See Problem 1 in N. Altshiller-Court, College Geometry, 2nd ed., Mineola, NY: Dover, 2007 p. 101.
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"The Distance to the Orthocenter from a Vertex"
http://demonstrations.wolfram.com/TheDistanceToTheOrthocenterFromAVertex/
Wolfram Demonstrations Project
Published: March 7 2011