SOLUTION: The second angle of a triangle is twice the first angle. the third angle is 20 degrees more then the first angle. Find the first angle.

Question 763937: The second angle of a triangle is twice the first angle. the third angle is 20 degrees more then the first angle. Find the first angle.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The second angle of a triangle is twice the first angle. the third angle is 20 degrees more then the first angle. Find the first angle.
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1st angle: x
2nd angle: 2x
3rd angle: x+20
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Equation:
sum of angles is 180
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x +2x +x + 20 = 180
4x = 160
x = 40 (1st angle)
2x = 80 (2nd angle)
x+20 = 60(3rd angle)
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Cheers,
Stan H.
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