Answer:
101 degrees
Step-by-step explanation:
Since Angle 1 is equivalent to Angle 2 (Alternate interior angles)
8x+7=9x-2
x=9
We can plug 9 back in for x
9(9)-2=79
Since Angle 2 and Angle 3 are a linear pair, Angle 2 + Angle 3 would add up to 180. So...
Angle 3 = 180-Angle 2
Angle 3 = 180-79
Angle 3 = 101
