Lines MN and PQ intersect at point R

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

Problem

Lines MN and PQ intersect at point R. One of the angles formed is

(2y + 20)^\circ

. Its adjacent angle is

(y + 50)^\circ

. Answer the following: (i) Find the value of

y

. (ii) Write the measure of each of the four angles formed at R. (iii) Classify each angle as acute, right, or obtuse.