How Do You Use the Angle Bisector Theorem to Find Missing Side Lengths in a Diagram?

How Do You Use the Angle Bisector Theorem to Find Missing Side Lengths in a Diagram?

Note:

There are lots of special lines in triangles that can help you solve for side lengths and angle measures. Watch this tutorial to find out how to use the Angle Bisector Theorem to find missing side lengths in triangles!

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Background Tutorials

  • Ratios

      • What's a Ratio?What's a Ratio?

      What's a Ratio?

      Ratios are everywhere! The scale on a map or blueprint is a ratio. Ingredients sometimes need to be mixed using ratios such as the ratio of water to cement mix when making cement. Watch this tutorial to learn about ratios. Then think of some ratios you've encountered before!

  • Congruent Figures

      • What Does Congruent Mean?What Does Congruent Mean?

      What Does Congruent Mean?

      If two figures have the same size and shape, then they are congruent. The term congruent is often used to describe figures like this. In this tutorial, take a look at the term congruent!

  • Solving Proportions

Further Exploration