Question

angle of a quadrilateral measures five third of aright angle and other three angle and other angles are equal find the measure of each of the angle
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Answer 1

Let x be one the three equal angles.

Sum of all the angles of a quadrilateral = 360°

⇒ x + x + x + 120° = 360°

⇒ 3x = 360°-120°

⇒ 3x = 240°

⇒ x = 80°

Thus, the measure of each of the equal angle is 80°

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