Question

find the angle which is double of its supplement​

Answer 1

Answer:

In this solution, the one supplement angle is taken by X and twice of supplement angle is 2X. So that it remains two supplement that is measured by angle at 180 degree and then consider it as X x+2x=180°, 3x=180°, x=180÷3=60°, 2×60=120°. Therefore, sum of two supplementary angles is 180°

Answer 2

See the pic you will get your answer.