1.

Three angle of a quadrialiteral are in ratio 2:5:6 .lf the forth angle is 100 Find the other three angle.

Answer»

let the angles are 2X , 5X and 6X

now 2x + 5x + 6x + 100 = 360

13x = 260

x = 20

so angles are

40 , 100 , 120



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