Question

In a quadrilateral one angle is 120degrees . The remaining three angles are equal.Find the measures of these angles?

Answer 1

Given :- one angle of quadrilateral = 120°
And remaining angles are equal so let them x.

We know that sum of all angles of a quadrilateral is 360 °

120+x+x+x=360°

=>3x = 360-120

=>3x =240

=>x= 240/3

=>x=80°

So the measure of all angles are 80°

Answer 2

Answer:

one angle in quadrilateral =120°

remaining 3 are equal

let=x

. sum u angles =360°

x+x+x+120°=360

3x= 360-120

3x=240

x=240/3 80

=>x=80°

I hope you understand

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