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

  • Verify theorems about the relationships in triangles, including proof of the pythagorean theorem, the sum of interior angles, base angles of isosceles triangles, midsegments, and medians, and apply these relationships to solve problems

      • 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!