please give me the solution of the question I WILL GIVE U THANKS AND MARK U AS BRAINLEIST PLEASE GIVE
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Answer:
120°
Step-by-step explanation:
measure of quadrilateral = 360°
therefore,
sum of measures of all angles in quadrilateral is 360°
80° + 80° + 80° + x = 360°
240° + x = 360°
x = 360° - 240°
x = 120°
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