- Complementary angles
Two angles are said to be complementary if their sum is
90o. This makes them add up to a right angle.
In a right triangle,
the 2 angles other than the right angle are
complementary because they add up to 90 degrees. (All the
angles of a triangle add up to 180o).
Here's a problem for you:
What is the measure of the missing angle in this right triangle?
missing angle and the 45 degree angle are complementary.
Use your browser's BACK button
to go back
...or go to the index of definitions
...or go back to the home page