An Altitude and Four Concyclic Points
An Altitude and Four Concyclic Points
Let ABC be a triangle and let A' be the foot of the altitude from A. Let P and Q be the perpendicular projections of A' onto AB and AC, respectively. Then B, C, P, and Q are concyclic.
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External Links
Permanent Citation
Permanent Citation
Jay Warendorff
"An Altitude and Four Concyclic Points"
http://demonstrations.wolfram.com/AnAltitudeAndFourConcyclicPoints/
Wolfram Demonstrations Project
Published: March 7, 2011