How can you use a right angle to determine the classification of another angle?

you can measure the first angle with a protractor and then measure the other one see if there is a different angle

If you compare the right angle to another angle and the other angle is bigger then it would be an obtuse angle and if the other angle was smaller then it would be an accute angle

I think

I’m confused as to what you are asking 66 2/3 percentage wise