solve the following
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let x be the angle
let x be the angle the sum of three angle = 180*
let x be the angle the sum of three angle = 180* 1x + 2x + 6x = 180
let x be the angle the sum of three angle = 180* 1x + 2x + 6x = 180
9x=180
9x=180
x=180/9
x=180/9
x=20
the three angle
1x=1×20 =20*
2x=2×20 =40*
6x=6×20 =120*
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