Question

What is the measurement of N?

A) 45°

B) 90°

C) 100°

D) 180°

Answer 1

N+45°=90°

N=90°-45° =45°
because here angle is right angle

Answer 2

N+45°=90° as given in the figure.

N=90°-45°

N=45°

∴ the answer is A
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