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In quadrilateral ABCD, ∠C=72° and ∠D=28° . The bisectors of ∠A and ∠B meet in O. What is the measure of ∠AOB?

एक चतुर्भुज ABCD में, ∠C=72° और ∠D=28° है| ∠A और ∠B के दिभजाक O पर मिलते है ∠AOB की माप क्या होगी?

A)48° B)54° C)50° D)36°

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