Question 749071
Angles in triangle:
x, x + 20 and 90.
Therefore:
x + (x + 20) + 90 = 180
     2x + 110 = 180
           2x = 180 - 110
           2x = 70
            x = 35 degrees
Therefore angles are:
35 degs, 55 degs and 90 degs