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AnimeBrainly
m<6 is 60
Since AC and BD are parallel, <6 and <4 are supplementary.
supplementary means = 180 degrees
Since m<6 is 60 degrees, subtract 60 from 180 to get <4
180 - 60 = 120

M<4 is 120

hope this helps
choixongdong
m<4 = 180 - 60
m<4 = 120

answer
H. 120
good job