Posted by cindy55 on Sunday, February 1, 2009 at 3:20pm.
55-55-70
70 is your largest..
The key fact here is that (at least on a plane) the angles of a triangle add to 180 degrees. So we have three angles, of measures x, x, and x+15. We can set up the equation 3x+15 = 180. Solve for x, and figure out which of the three angles is the largest (If figuring out which of the three is largest is hard, you made a mistake somewhere.)
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