Answer:
Angle 1 is 117 degrees.
Angle 2 is 59 degrees.
Explanation:
Let angle 1 be x, and angle 2 be y.
By the exterior angle theorem, x + 21 = 138, so x = 138 - 21 = 117.
Again, by the exterior angle theorem, 79 + y = x = 138, so y = 138 - 79 = 59.
m<1=117
m<2=99
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