Answer:
79
Step-by-step explanation:
m<1 = 90 -38 = 52
m<3 = 90 - 52 = 38\
m<2 = 180-38-63 = 79
<1 + <3 = 90 Parallel lines produce interior angles that add to to 90
<1 + 38 = 90 Substitution
<1 = 90 - 38 52
<3 = 90 - 52
<3 = 38
38 + 63 + <2 = 180 Sum of angles in a triangle always = 180
101 + <2 = 180
<2 = 79
