Let ABCD be a quadrilateral in which ∠A = ∠C, and ∠B = ∠D. Prove that ABCD is a parallelogram.
deepak14007:
opposite angles of parallelogram are equal so this is a parallogram
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the opposite angle of parallelogram are congruent then angle A=angle C are congruent and angleB=angle D congruent
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