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abigail018
11.11.2019 •
Mathematics
What is the value of x? enter your answer in the box. x = °
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Ответ:
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
Ответ: