Answer:
The answer to your question is the letter C. 80°
Step-by-step explanation:
Data
Angle 1 = 75°
Angle 2= x
Angle 3 = 25°
From the picture we know that the sum of the three angles equal 180°. So,
Angle 1 + Angle 2 + Angle 3 = 180°
-Substitution
75° + x + 25° = 180°
-Solve for x
x = 180° - 75° - 25°
-Simplification
x = 180° - 100°
-Result
x = 80°
