What are Complementary Angles?

What are Complementary Angles?

Note:

Do complementary angles always have something nice to say? Maybe. One thing complementary angles always do is add up to 90 degrees. In this tutorial, learn about complementary angles and see how to use this knowledge to solve a problem involving these special types of angles!

Keywords:

  • definition
  • angle
  • angles
  • complementary
  • complementary angles
  • right angle
  • right angles
  • 90 degrees
  • 90
  • 90 degree angle
  • add angles
  • add to 90

Background Tutorials

  • Planes and Angles

      • What is an Angle?What is an Angle?

      What is an Angle?

      Angles are a fundamental building block for creating all sorts of shapes! In this tutorial, learn about how an angle is formed, how to name an angle, and how an angle is measured. Take a look!

      • What are Acute, Obtuse, Right, and Straight Angles?What are Acute, Obtuse, Right, and Straight Angles?

      What are Acute, Obtuse, Right, and Straight Angles?

      Did you know that there are different kinds of angles? Knowing how to identify these angles is an important part of solving many problems involving angles. Check out this tutorial and learn about the different kinds of angles!

  • Solving Equations by Subtracting

Further Exploration

  • Angle Definitions

      • What are Supplementary Angles?What are Supplementary Angles?

      What are Supplementary Angles?

      Knowing about supplementary angles can be very useful in solving for missing angle measurements. This tutorial introduces you to supplementary angles and shows you how to use them to solve for a missing angle measurement. Take a look!

  • Finding Missing Angles

      • How Do You Use Complementary Angles to Find a Missing Angle?How Do You Use Complementary Angles to Find a Missing Angle?

      How Do You Use Complementary Angles to Find a Missing Angle?

      If two angles are complementary, that means that they add up to 90 degrees. This is very useful knowledge if you have a figure with complementary angles and you know the measurement of one of those angles. In this tutorial, see how to use what you know about complementary angles to find a missing angle measurement!

  • Finding Angles in Triangles

      • How Do You Find a Missing Angle in a Right Triangle?How Do You Find a Missing Angle in a Right Triangle?

      How Do You Find a Missing Angle in a Right Triangle?

      Trying to find a missing interior angle measurement in a triangle? See if you're working with a special type of triangle such as an equilateral or isosceles triangle. If you are, that knowledge can help you. In this tutorial, see how identifying your triangle first can be very helpful in solving for that missing measurement. Take a look!