Lines and intersect at point

MATHEMATICS · Single correct · CBSE · Mathematics · Lines and Angles · Lines and Angles

Problem

Lines

l

and

m

intersect at point

S

. One angle is

(2x + 10)^\circ

and the angle adjacent to it is

(3x - 40)^\circ

. Which of the following correctly classifies the angle vertically opposite to

(3x - 40)^\circ

? (a) Right (b) Obtuse (c) Acute (d) Straight