Two lines intersect at point

MATHEMATICS · Multi-part · CBSE · Mathematics · Lines and Angles · Lines and Angles

Problem

Two lines intersect at point QQ, forming four angles a,b,ca, b, c and dd in order around the point. Angle aa measures (2p+25)∘(2p + 25)^\circ and its adjacent angle bb measures (4p−15)∘(4p - 15)^\circ. (i) Calculate the value of pp. (ii) Find the measure of angle cc.

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