Question 385504
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Hi,         
Let x represent the second angle, (x+28°) the third and 2x the first.
Note:  Sum of the angles in a Trangle = 180°
  2x + x + (x+28°) = 180°
solving for x
    4x = 152°
     x = 38°, the second angle.  third is 66° and first 76°  
CHECKING our Answer
   76° + 38° + 66° = 180°