Answer:
m<2 = 63
m<3 = 117
Step-by-step explanation:
<1 and <2 are alternate interior angles and are therefore equal. M<1 = 63 degrees, so m<2 must be the same thing.
<2 and <3 are on the same straight line.
They are supplementary.
Therefore they equal 180 degrees.
63 + m<3 = 180 Subtract 63 from both sides.
63 - 63 +m<3 = 180 - 63 Collect like terms
m<3 = 117
