Question

In a quadilateral,the sum of three angles is equal to twice of the fourth angle.the measure of fourth angle is:

Answer 1

let the fourth angle be x
according to the question, the sum of three angles of the quadrilateral is equal to fourth angle, therefore
2x+x=360°
3x=360°
x=360°/3=120°
hence, measurement of the fourth angle of the quadrilateral is 120°

Answer 2

Answer:

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