SOLUTION: The second angle of a triangle measures 10 degrees more than the first angle. The third angle measures 30 degrees less than twice the second angle. what are the measures of the thr

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let angle 1 be
let angle 2 be
let angle 3 be
when you add up all angles in a triangle, they equal 180
so your equation would be

combine like terms and you get


so angle 2 would be
and the last angle would be
the solution is
angle 1 = 45
angle 2 = 55
angle 3 = 80