Answer: 55 degrees
Explanation:
so we only need to focus on the triangle with m<1 we know that it is a right triangle so there's already 90 degrees.
if we do 180 - 145 that gives us another angle measurement which is 35
now to find angle 1 we need to add 90 + 35 = 125
since there's 180 degrees in a triangle we do 180 - 125 and that gives us 55 which is the missing angle