Q13 of 56 Page 75

Diagonals of a quadrilateral ABCD bisect each other. If ÐA = 35°, determine ÐB.

Given: A = 35°

∵ diagonals of the quadrilateral ABCD bisect each other


∴ it is a parallelogram


⇒ A + B = 180°


⇒ 35° + B = 180°


⇒ B = 180° – 35°


⇒ B = 145°


Hence, B = 145°.


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