Online Geometry Problems

Online Geometry Problem 778: Triangle, Distance from the Orthocenter to a Vertex, Circle, Circumradius, Side, Square. Level: High School, College, Mathematics Education

The figure below shows a triangle ABC with the orthocenter H and circumradius R. Prove that BH2 + AC2 = 4R2.

Triangle, Distance from the Orthocenter to a Vertex, Circle, Circumradius, Side, Square
 


 

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