Question

m ll n and m∠1 = 45°.
What is the m∠2?

Answer 1

line m, angle 2= 135 degrees
Why?
It is a supplementary angle, so it has to add up to 180 degrees.
180-45= 135 degrees

Answer 2

135 degress because if u do 180-45 it will equal 135 also 180 is a straight line