Sums of Squares of Segments Created by a Pedal Triangle
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The triangle formed by projecting a point onto the sides of a triangle or their extensions is a pedal triangle.[more]
Let ABC be a triangle, P a point, and A'B'C' the corresponding pedal triangle. Then .[less]
Contributed by: Jay Warendorff (March 2011)
Open content licensed under CC BY-NC-SA