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let A,B,C be the vertices of acute triangle with D,E,F be the foot of the altitudes lying on BC,CA,AB.one of the intersection points of EF and circumcircle is P.The lines BP and DF intersects at Q.prove that PA=QA.

let A,B,C be the vertices of acute triangle with D,E,F be the foot of the altitudes lying on BC,CA,AB.one of the intersection points of EF and circumcircle is P.The lines BP and DF intersects at Q.prove that PA=QA.

Grade:9

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