Help please I need an answer asap thank you so much

Answer:
m and n are parallel because if you add 55 and 125 together you get 180
Step-by-step explanation:
If the lines are parallel, ∠3 = 125 (due to corresponding angles) and 55 + ∠3 = 180 (since angles on a straight line add upto 180).
Seeing this is true,
the lines m and n are parallel.
Feel free to mark this as brainliest! :D