Question

Three angles of a quadrilateral are equal and the fourth angle measures 120degree . What is the measure of each of the equal angles ?.... plz answer my question !!

Answer 1

Given,

one angle is 120°

To find,

other three angles of quadrilateral.

Solution,

Let "x" be the angle

we know that , the sum of quadrilateral is 360°

x+x+x+120°= 360°

3x+120=360

3x= 360 -120

3x=240

x=240/3

x=80°

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