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Rakhi2604

Rakhi2604 Ambitious

In triangle PBA and PCD

PA = PD (P is the mid point of AD)

Angle PAB = Angle PDC (90 degree)

AB = DC (two sides of square)

So triangle PBA congruent to PCD.

=> Angle ABP = PCD

Now if equals are subtracted from equals then the result is also equal.

ABP +PBC=PCD + PCB

PBC=PCB (ABP and PCD canceled out as they are equal)