In a quadrilateral one angle is 120degrees . The remaining three angles are equal.Find the measures of these angles?
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Answered by
20
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°
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°
Answered by
3
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°
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