Proportions with Angle Bisectors: Lesson

This Proportions with Angle Bisectors: Lesson video also includes:

Half at one end becomes proportional on the other. As part of a basic geometry playlist, the video introduces the Angle Bisector Theorem. The presentation uses the theorem to find missing lengths in triangles.

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CCSS: Adaptable
Instructional Ideas

  • Develop a proof for the Angle Bisector Theorem
Classroom Considerations

  • Individuals should be able to solve proportions
  • Pupils should know the definition of an angle bisector

  • Links to other videos and resources about angle bisectors
  • Shows the algebra required in the example problems

  • None
Common Core