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2 years ago

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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