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

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

Note:

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!

Keywords:

  • problem
  • triangle
  • right triangle
  • right
  • right angle
  • find angle
  • find missing angle
  • angles
  • angle
  • complementary
  • complementary angles
  • add to 180
  • add to 90
  • triangle sum theorem
  • equation
  • solve
  • add angles

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!

  • Polygon Definitions

      • What is a Polygon?What is a Polygon?

      What is a Polygon?

      Got a closed figure with three or more sides? Then you have a polygon! In this tutorial, you'll learn about the properties of a polygon, see the names of the most popular polygons, and learn how to identify polygons. Check it out!

  • Solving Equations by Subtracting

Further Exploration

  • Finding Angles in Triangles

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

      How Do You Find a Missing Angle in a Triangle?

      Trying to find a missing interior angle measurement in a triangle? Already know the other two interior angle measurements? Then you're set! Just remember that the interior angles of a triangle ALWAYS add up to 180 degrees. This tutorial shows you how to put this knowledge into an equation and solve to find that missing measurement!