Question

Lines a and b are parallel.

Answer 1

m and 125º are supplementary angles:

m + 125º = 180º

m = 180º – 125º

m = 55º  <———    this is the answer.


I hope this helps. =)

Answer 2

Answer:

m = 55

Step-by-step explanation:

125 and m are adjacent angles  (supplementary).

remember supplementary angles add up to 180

so sub 180 and 125 to get the angle measure of m