Q. 305.0( 1 Vote )

# Diagonals of a quadrilateral ABCD bisect each other. If ∠A =45°, then ∠B =A. 115°B. 120°C. 125°D. 135°

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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