Instructional Video

Regular Polygons

Curated and Reviewed by Lesson Planet

Make area a regular affair. By dividing a regular polygon into triangles, pupils see how the area formula works. Learners watch several examples of finding the area of various regular polygons before practicing how to find the area of polygons, including those defined by their central angles.

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Instructional Ideas
  • Review finding the values of trigonometric ratios using a calculator
Classroom Considerations
  • Assumes the class has knowledge of the Pythagorean Theorem, special right triangles, and trigonometric ratios
  • Installment three in an Area of Polygons unit with six parts
  • This video is hosted on YouTube
Pros
  • Includes an additional worksheet for those needing extra practice
  • The answer key shows all the steps required to find the solutions
Cons
  • None