You can put this solution on YOUR website! The interior angles of a triangle total 180 degrees.
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We are told the ratio of the angles are 1:3:5.
So we can formulate an equation where 'x' represents the unknown first angle.
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x + 3x + 5x = 180
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9x = 180
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x = 20
3x = 60
5x = 100
Total = 180
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Answer: The angles are 20, 60, and 100 degrees.
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Done.