Answer:
59
Step-by-step explanation:
2x+2 = 120 because they are vertical angles
2x = 118
x = 59
BM=CM bc of the definition of midpoint
AB =AC bc of the def of an isosceles triangle
and angle B = angle D becasur corresponding parts
If the original angle is x degrees then its supplement is 180 - x degrees.
we have the equation:-
180 - x = 3x + 20
160 = 4x
x = 40
The original angle is 40 degrees and its supplement is 140 degrees
Yes