Question

In a right triangle, one of the exterior angles measures 155°. What is the measure of the non-adjacent, non-right angle?

Answer 1

Supplementary angles equal to 180
So, adjacent angle + exterior angle = 180
adjacent angle = 180 - 155 = 25

Now, non-adjacent + adjacent = 90
non-adjacent = 90 - 25 = 65
So 65 degrees is your answer.