Answer:
D
Step-by-step explanation:
Okay so the ∠2 = 40deg. That means ∠2 + ∠6 = 180
∠6 = 180 - 140
Same goes for ∠1, ∠1 + ∠2 = 180, ∠1 = 180 - 40 = 140
∠1 + ∠6 = 140 + 140 = 280degrees = Ans D
