Answer:
Step-by-step explanation:
1) 180 - 71 = 109° supplement to 71°
2) corresponding angle with given 71°
3) 180 - 71 - (180 - 120) = 49° ∠3 and opposites of ∠2 and ∠4 add to 180°
4) 180 - 120 = 60° corresponding to angle 5
5) 180 - 120 = 60° supplement to given 120°
