Answer:
B. 85*
Step-by-step explanation:
1. Understand that a triangle always has the additive degrees of 180.
2. Use x+55+40=180, to isolate x, subtract 55 and 40 from 180.
3. You get x = 85.
B. 85 degrees
According to the Triangle Sum Theorem, all the angles inside a triangle equal 180 degrees. The work is below:
180-40-55=85. The angle missing is 85 degrees.
Brainliest plz!!!
