Probably you are a victim of a rounding problem. A 25.05%%d angle could be displayed as 25%%d.
How did you measure the angles? If you placed angular dimensions on the 3 angles, you should check the precision. Select a dimensions and click CTRL+1 if the Properties window is not visible on the screen. Go to Primary Units > Angle Precision and select a higher precision. Did the display changed?
Be sure that in any triangle the sum of the angles is 180%%d. You donít trust me? -Ask Euclid!