Answer:
m<1=31 degrees and m<2=106 degrees
Explanation:
To find m<1 you have to do m<2 first. Use the 74 degrees from m<4 and subtract that from 180. 180-74=106. With that information you can find m<1. Take 106 from m<2 and 43 from m<3 and subtract that from 180. 180-106-43=31.