Lines and intersect at point

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

Problem

Lines

AB

and

CD

intersect at point

O

. The measure of one vertical angle is

(3y + 10)^\circ

and the measure of the other vertical angle is

(7y - 50)^\circ

. (i) Find the value of

y

. (ii) Write the common measure of these two angles.