Let triangle ABC be any triangle. Then if P is any point in the plane, then the triangle formed by constructing perpendiculars to the sides of ABC locate three points R, S, and T that are the intersections.
Triangle RST is the Pedal Triangle for Pedal Point P.
Click here to obtain the GSP script for the general construction of a pedal triangle to triangle ABC where P is any point in the plane of ABC.
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