Instructional Video

Angles in a Triangle

Curated and Reviewed by Lesson Planet
This Angles in a Triangle instructional video also includes:

The third angle's the charm. Viewers of a short video learn how to find the measure of the missing angle in a triangle. It uses an arithmetic process rather than an algebraic one, so younger learners have no trouble understanding the concept.

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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Hand out the worksheet as homework
Classroom Considerations
  • Pupils should be familiar with the sum of the interior angles of triangles being 180 degrees
  • An understanding of congruence marks is necessary
Pros
  • Explanations of the process are easy to follow
Cons
  • Video is not very interesting
Common Core