Answers

2015-09-27T13:26:07+05:30
Let same angles b x 
other angle is 120
sum of angles in a quadrilateral is 360
x+x+X+120=360
3x+120=360
3x=360-120
x=240/3
x=80
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2015-09-27T13:31:17+05:30
∵ the three angles are equal 
∴we will take all the equal three sides=3a
 ⇒a+a+a+120°=360°
⇒3a=360°-120°
⇒3a=240°
⇒a=240°/3
⇒a=80°
∴all the equal angles are of 80°.
         i hope this will help u
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