Question

Please answer fast in 2 min.

Answer 1

Answer:

∠R=140°

To solve,

draw a parallel line through Q, parallel to line l and m

name it n,

now, line n divides ∠Q such that, its upper angle is equal to 60°(since, ∠P=upper angle of ∠Q)

therefore, lower angle will be 40° (100-60=40)

since, lower ∠Q+∠R=180

40+∠R=180

therefore, ∠R=140°