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ICSE Class 6 Answered

Three angles of a quadrilateral are equal and the fourth angel measures  120.what is the measure of each of the equal angle? 

Asked by Shalaka.2607 | 09 Feb, 2019, 12:50: PM
Expert Answer
Let the each equal angle measure x
So 3 equal angles will measure x + x + x = 3x
The fourth angle of quadrilateral = 120o
 
Sum of all the interior angles of a quadrilateral = 360o
3x + 120 = 360
3x = 360 - 120
3x = 240
x = 240/3 = 80o
The measure of each of the equal angle 80o
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