Respuesta :

Answer:

1. angle 4 = 129°

2. 60°, 60°, and 120°

3. I'll put it in the comments

Step-by-step explanation:

1. supplementary angles

2. equilateral triangle and supplementary angles

1. Angle 4 = 59
2. Angle 1 = 59, Angle 2 = 61, Angle 3 = 119
3. X = 6