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CBSE Class 9 Answered

In a quadrilateral ABCD, the line segments bisecting C and D meet at E. Prove that A + B = 2 CED.
Asked by Topperlearning User | 16 Aug, 2017, 02:17: PM
Expert Answer
In DEC, 1+ 2 + CED = 180o           (angle sum property of triangle)
CED = 180o – (1+ 2)
A + B+ C+D = 360o           (angle sum property of quadrilateral)
Answered by | 16 Aug, 2017, 04:17: PM

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