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CBSE Class 9 Answered

ABDC is a cyclic quadrilateral and AB = AC. If ACB = 70o find BDC.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

In

AB = AC ABC = ACB = 70o

BAC + 70o+ + 70o = 180o

BAC = 180o - 140o = 40o

ABCD is a cyclic quadrilateral and opposite angles of a cyclic quadrilateral are supplementary

BAC + BDC = 180o

40o+ BDC = 180o

BDC = 140o

Answered by | 04 Jun, 2014, 03:23: PM
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