C-08-Q130mediumsingle_mcqIf a cyclic quadrilateral has ∠A=70∘\angle A = 70^{\circ}∠A=70∘, then ∠C\angle C∠C is—a70∘70^{\circ}70∘b110∘110^{\circ}110∘c90∘90^{\circ}90∘d20∘20^{\circ}20∘ব্যাখ্যা∠A\angle A∠A and ∠C\angle C∠C are opposite angles, so ∠C=180∘−70∘=110∘\angle C = 180^{\circ} - 70^{\circ} = 110^{\circ}∠C=180∘−70∘=110∘.