Let P be a point in triangle ABC such that angles APB, BPC, and CPA are all 120 degrees. Can lines AB, AC, BC, PA, PB, and PC all have integral lengths?

You wrote : 

SO D=y^2 - 4*y^2= -3*y^2

which should read

SO D=y^2 - 4*y^2= -3*y^2 + 4*c^2

 

Posted by xdog on 2007-04-13 08:35:48