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, [¨]Area of a triangle of which three points are each foot of perpendicular / Confirming with measurement (Minimum)(GC World : Various Problems ,MaxEMin)
There are ĢABC and point P.
Perpendicular feet drawn from point P to three sides are named D, E, and F respectively.
If point P moves, when will the area of ĢDEF be 0?
GC/Win