Final answer:
In angle XYZ, where angle Y is 90 degrees, angles X and Z make a pair of complementary angles because their sum equals to 90 degrees.
Step-by-step explanation:
In angle XYZ, angle Y has a measure of 90 degrees. In this case, angle X and angle Z form a pair known as complementary angles.
Complementary angles are two angles that add up to 90 degrees. So, if angle Y has a measure of 90 degrees, then angle X and angle Z must add up to 90 degrees.
For example, if angle X has a measure of 60 degrees, then angle Z would have a measure of 30 degrees (60 + 30 = 90 degrees).
Learn more about Complementary angles