Answer:
60
Step-by-step explanation:
If angle 1 is 120 that means angle 5 is 120 too. Two angles together must equal 180 degrees.
60 degrees
Explanation:
1 : 2 as 5 : 6
∠1 + ∠6 = 180°
∠1 = 120°
∠6 = ?
180° - 120° = 60°
∠6 = 60°
