CBSE Class 9 Answered
In figure, if
AB||DE, ABC = 75o and CDE = 145o, then find BCD.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Construction: Draw PCQ || to AB and DE.
DCQ + CDE = 180o (DE || CQ, co-interior angles are supplementary)
QCD = 180o -145o = 35o
BCP + CBA = 180o ( AB||PQ, co-interior angles are supplementary)
BCP =180o - 75o = 105o
BCP + BCD + DCQ = 180o (Angles in straight line)
BCD = 180o - 105o - 35o = 40o
Answered by | 04 Jun, 2014, 03:23: PM
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