The angles of a triangle are (x-35), (x-25), and - (1/2x-10). Find x?
- 100
- 80
- 90
- None of these
Explanation
The sum of the interior angles of a triangle is 180 degrees.
x-35 + x-25 + 1/2x - 10 = 180
2.5x -70 = 180
2.5x = 250
x=100
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