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In a quadrilateral ABCD, AO and BO are bisectors of angle A and angle B respectively. Show that:

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In a quadrilateral ABCD, AO and BO are bisectors of angle A and angle B respectively. Show that:

∠AOB = 1/2 (∠C + ∠D)
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Given : AO and BO are the bisectors of ∠A and ∠B respectively.

∠1 = ∠4 and ∠3 = ∠5 ……..(i)

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