The Product of an Altitude and the Circumradius of a Triangle

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Let the circumradius of a triangle ABC be R and let AA' be the altitude drawn from A. Then .

Contributed by: Jay Warendorff (March 2011)
After work by: Alexander Bogomolny
Open content licensed under CC BY-NC-SA

Snapshots

A. Bogomolny, "Relations between Various Elements of a Triangle," Interactive Mathematics Miscellany and Puzzles.


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