The three angles of a quadrilateral are equal and the fourth angle is 60°. Find the measure of each angle
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It is given that three angles are equal and measure of fourth angle is 120
o
.
Let the measure of each of the equal angles be x
We know that, sum of four measure of angles of quadrilateral is 360
o
.
⇒ x+x+x+120
o
=360
o
⇒ 3x+120
o
=360
o
⇒ 3x=240
o
⇒ x=80
o
Hence, this is the answer.
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