Instructional Video

The Isosceles Triangle Theorem is Actually Really Simple!

Curated and Reviewed by Lesson Planet

The isosceles triangle comes with its own set of properties. A lecturer shows how to apply the Isosceles Triangle Theorem to find missing side lengths or angle measures. The final example involves both square roots and quadratic equations. 

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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Have learners record all postulates, theorems, and definitions in a graphic organizer with examples
  • Create a set of practice problems to match the instruction in the video
Classroom Considerations
  • If assigning the video, ensure pupils have access to the Internet 
  • The final installment in the 40-part geometry series
  • This video is hosted on YouTube
Pros
  • Instructor demonstrates different level of examples to allow for differentiation
Cons
  • Work on the last example is difficult to follow on the screen
Common Core