एक चतुर्भुज ABCD में ∠A तथा ∠B के द्विभाजक क्रमशः AO तथा BO है ∠C = 70° तथा ∠D = 30° हो तो ∠AOB = ? - - Ek Chaturbhuj ABCD Me ∠A Tatha ∠B Ke द्विभाजक Kramash: AO Tatha BO Hai ∠C = 70° Tatha ∠D = 30° Ho To ∠AOB = ? Maths in hindi, quadrilaterals 80° question answers in hindi pdf 50° questions in hindi, Know About 60° Maths online test Maths notes in hindi quiz book 87°