<u>Statement</u> Reason
<u>m<1 + m<2 = 180 </u> linear pair
*(m<1 and "<2 form a straight line together, a straight line has a degree measure of 180)
<u>m<2 = m<3 </u> given
<u>m<1 + m<3 = 180 </u> transitivity
Answer:
Step-by-step explanation: