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Instructional Video

Finding Perimeter Using the Pythagorean Theorem

Curated and Reviewed by Lesson Planet

What would right triangles be without the Pythagorean Theorem? Here learners see how to apply the Pythagorean Theorem to finding missing sides of triangles. The examples include both right and non-right triangles. 

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CCSS: Adaptable
Concepts
pythagorean theorem, right triangles, perimeter, perimeter of triangles, problem solving strategies, quadratic equations, square roots
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Additional Tags
math
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Instructional Ideas
  • Create a guided notes document for learners to complete as they are watching the video
  • Have the video available for a substitute teacher
Classroom Considerations
  • YouTube video requires Internet access
  • The eighth installment in a 40-part video series
  • This video is hosted on YouTube
Pros
  • The work shown is clear and well planned
Cons
  • Examples all use Pythagorean triples; more often, the numbers don't work out as nicely
Common Core
8.G.B.7