Answer: m<2 = 123°
Explanation:
Because lines l and m are parallel, m<5 = m<1.
m<1 = 57°
to find m<2, you must recognize that m<1 and m<2 are supplementary (or 180° if added together) because of the above proof, the lines are parallel
doing some algebra:
180-m<1=m<2
180-57=123
and because we are working we degree measures don’t forget your ° sign