Find the angle which is double to its supplement 

let one of the angle be x

therefore the other angle = 2x

so ​by the given condition,

2x + x = 1800                [as measures of supplementary angles = 1800]

that implies 3x= 1800

that implies x = 180/3 = 600

therefore the 1st angle = 600

therefore the other angle = 60 X 2= 1200

hope this helps.                    [0 = degree]



 

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