Q. 3 A5.0( 2 Votes )

# <span lang="EN-US

The figure of the question is given below:

Given that MPN = 60°

The above figure represents a quadrilateral PNQM

So, the sum of all angles of a quadrilateral is 360°

MQN + QNP + MPN + PMQ = 360° .. eq(1)

Since PM is MQ and PN is QN

QNP = PMQ = 90°

By substituting all angles in eqn (1)

MQN + 90° + 60° + 90° = 360°

MQN = 120°

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