Complementary angles are two angles that have a sum of 90 degrees. When a right angle is divided into two adjacent angles, complementary angles are formed.

Would you like more details or have any questions on this topic?

Here are 5 related questions to deepen your understanding:

1. How do you calculate the measure of one complementary angle if the other is given?
2. What is the difference between complementary and supplementary angles?
3. Can two obtuse angles be complementary? Why or why not?
4. In a right triangle, which angles are complementary?
5. How do complementary angles relate to angles in parallel lines cut by a transversal?

Tip: Remember, complementary angles always add up to 90 degrees, while supplementary angles add up to 180 degrees.