Answer:
104
Step-by-step explanation:
Using angle rules, we know that angle 6 and angle 4 are congruent. Since angle 4 and angle 3 are on the same line, we can find angle 3 by subtracting 76 from 180 which is 104. Angle 1 and angle 5 are opposite each other so they are congruent.
Angle 1 and Angle 3 both equal to 104 degrees.
