we know that
In this problem
Angle 5 and angle 2 are consecutive interior angles
That means -----> are supplementary angles
so
m<5+m<2=180
substitute the given value
134+m<2=180
m<2=180-134
m<2=46 degrees
Find the value of m<4
we have that
m<4=m<2 ------> by vertical angles
therefore
m<4=46 degrees
Part 2