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Answer:
x=61°
Explanation:
angles in triangle add up to 180°
180°-80°-39°=x
61°=x
We know that,
Sum of three side of triangle is 180 °
So,
80°+ 39° + x = 180°
119°+ x = 180°
x = 180°-119°
x = 61°
Thus,
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