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Stells [14]
2 years ago
13

Give the value of x . A. 60 degrees B. 180 degrees C. 120 degrees D. 45 degrees

Mathematics
1 answer:
Harrizon [31]2 years ago
5 0

Answer:

x=120°

Step-by-step explanation:

sum of all angles in a triangle is equal to 180

let the unknown angle be

\alpha

60 + 60 +  \alpha  = 180 \\  \alpha  = 180 - 60 - 60 \\  \alpha  = 60 \\

\alpha  + x = 180 \\ x = 180 -  \alpha  \\ x = 180 - 60 \\ x = 120

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