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आकृति में एक ही आधार BC पर दो त्रिभुज AB...

आकृति में एक ही आधार BC पर दो त्रिभुज ABC और DBC बने हुए है। यदि AD,BD को O पर प्रतिच्छेद पर तो दर्शाइए कि `(ar(DeltaABC))/(ar(DeltaDBC))=(AO)/(DO)` है।

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A cyclic Quadrilateral ABCD is such that AB=BC, AD=DC and AC and BD intersect at O. If angle CAD= 46^@ , then the measure of angle AOB is equal to: एक चक्रीय चतुर्भुज ABCD इस प्रकार है की AB = BC, AD = DC और AC और BD पर O पर प्रतिच्छेदित करती है । यदि angle CAD= 46^@ है, तो angle AOB का माप है: