SOLUTION: 1. If the angle of a triangle are in the ratio if 5:3:7,then what triangle is it 2. The angle which is twice it supplement is {a}60 {b}120 {c} 110 {d}130

Algebra ->  Points-lines-and-rays -> SOLUTION: 1. If the angle of a triangle are in the ratio if 5:3:7,then what triangle is it 2. The angle which is twice it supplement is {a}60 {b}120 {c} 110 {d}130      Log On


   

Question 472278: 1. If the angle of a triangle are in the ratio if 5:3:7,then what triangle is it
2. The angle which is twice it supplement is {a}60 {b}120 {c} 110 {d}130
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
1. If the angle of a triangle are in the ratio if 5:3:7,then what triangle is it
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Solve for "x":
5x + 3x + 7x = 180
15x = 180
x = 12
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3x = 36 degrees
5x = 60 degrees
7x = 84 degrees
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Type of triangle: scalene
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2. The angle which is twice its supplement is ?
Let the angle be "x".
Its supplement is "180-x".
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Equation:
x = 2(180-x)
x = 360-2x
3x = 360
x = 120 degrees
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Cheers,
Stan H.
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{a}60 {b}120 {c} 110 {d}130