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Answer:
a= 110 b=50 c=120
Step-by-step explanation:
ok first you see that the c angle is a co inerior angle which adds up to 180
180-60=120
c=120
the angle besides c is a supplementry angle which adds up to 180
180-c=unkown angle
180-120=60
now onto the a angle it is also a con interior angle so we do
180-70= a
a= 110
now b angle it is in a triangle
we already know one angle is 60 and to find the top angle we subtract 110 from 180 (supplementry angle) which is 70
so we have to angles 70 & 60
to find angle b we 180-60-70=b (this is bc theres 180 degrees in a triangle)
so b=50
hope that helps sorry it the explanation is confusing