Respuesta :
Answer:
40°
I hope it will be useful.
Step-by-step explanation:
Angles on the same side of the transversal are equal.
Answer:
x=40
Step-by-step explanation:
If m and n are parallel (symbol ||) then the blue angles must be equal.
In other words, 120 must be 3x.
Hence the solution for x is 120 divided by 3, which is 40.