Question

In the given figure below, decide whether l is parallel to m.

Answer 1

x + 75° = 180° (Linear pair on line l)

x = 180° − 75° = 105°

For l and m to be parallel to each other, the corresponding angles (∠ABC and ∠x) should be equal. However, here their measures are 75° and 105°, respectively. Hence, the lines l and m are not parallel to each other.