Answer:
91°
Explanation:
Angle 2 and 3 are supplementary angles (they add up to 180).
Lets write an equation and solve for x:
Also, Angle 1 and Angle 3 are vertical angles and they are EQUAL.
So angle 1 is also 7x - 14. And x = 15 so Angle 1 is:
Angle 1 = 7x - 14 = 7(15) - 14 = 91