Answer:
m-4 = 64 degrees.
Step-by-step explanation:
180 - 116 = 64
supplementary angles are when 2 degrees add up to 180
so if one of them is 116 then you subtract that from 180 and get 64
so the other angle would be 64 degrees
64 degrees
Supplementary angles add up to 180
180-116=64
