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In a quadrilateral ABCD,AO and BO are the bisectors of ∠A and ∠B respectively, ∠C=70∘ and ∠D=30∘. Then, ∠AOB= ? (a) 40∘ (b) 50∘ (c) 80∘ (d) 100∘ |
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Answer» In a quadrilateral ABCD,AO and BO are the bisectors of ∠A and ∠B respectively, ∠C=70∘ and ∠D=30∘. Then, ∠AOB= ? (a) 40∘ (b) 50∘ (c) 80∘ (d) 100∘ |
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