Q30 of 77 Page 16

Diagonals of a quadrilateral ABCD bisect each other. If ∠A =45°, then ∠B =

Since, diagonals of quadrilateral bisect each other

Hence, it's a parallelogram


We know,


The adjacent angles of parallelogram are supplementary


Therefore,


∠A + ∠B = 180°


45° + ∠B = 180°


∠B = 135°

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