What is the value of x? Enter your answer in the box. x = °

Answer:
45
Step-by-step explanation:
All angles in a triangle add up to 180.
80 + 55 = 135
180 - 135 = 45
Answer:
The answer to your question is: x = 45°
Step-by-step explanation:
We must know that the sum of the internal angles in a triangles equals 180°.
Then ∠A + ∠B + ∠C = 180°
Substitution
55° + 80° + ∠C = 180°
135° + ∠C = 180° Simplification
∠C = 180 - 135
∠C = 45°
∠C = x
x = 45° Result