Answer:45 degrees
Explanation:
All angles on a triangle have to add up to 180 degrees
so if you have one right angle that you know is 90 degrees then the other two have to be added together to make 90 because 90+90=180
so the angles for 1 and 2 should be 45
I really hope this helps
They are also congruent, I'm not sure the type of answer you need