Question

Find measure of angle which is double of its suppliment

Answer 1

Heya,


Let supplement = x and angle = 2x

x + 2x = 180°
=>3x = 180°
=>x=60°

So, angle = 2x = 120°

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Answer 2

let the angle be x

the suppliment of x = 180- x

ATQ

2( 180 - x ) = x

360 - 2x = x

3x = 360

x = 120

the angle is 120