Respuesta :
Answer:
120 degrees
Step-by-step explanation:
180- 60( added the two given angles)= 120
If you’re talking about interior angles
The interior of a triangle will always be 180 degrees
20+40+x=180
60+x=180
X=120
The interior of a triangle will always be 180 degrees
20+40+x=180
60+x=180
X=120