The 41° and the 90° are adjacent. They are adjacent because they are touching each other side by side. That is the angles SUR and SUT
Angle SUR is acute, because it is 41° and it less than 90°. Same as angle PUQ. Angle PUR = Angle SUR, both are vertically opposite, therefore PUR is also 41°.
Angles TUQ and QUN are both supplementary because they both add up to 180°, which is the straight line TUN.
