An angle of a quadrilateral is 84 degree. All other three angles are equal. What is the measure of each of its equal angles in degree.
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Step-by-step explanation:
first angle = 84
let the other angles be x , x , x
sum of all angles of a quadrilateral = 360
84 + x + x + x = 360
= 3x = 360 - 84
= 3x = 276
= x = 276/3
= x = 92
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