Angle Sum Property of Triangles

All triangles have some things in common. Using these properties of triangles, learners find missing angle measures. Scholars use the Angle Sum Property and properties of special triangles throughout the lesson.

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CCSS: Adaptable
Additional Tags

Instructional Ideas

  • Use the resource to create a guided notes document
  • Use practice problems as board work to check for understanding and fix misconceptions
Classroom Considerations

  • Uses concepts from the previous lesson in a 16-part series of geometry lessons
  • This resource is only available on an unencrypted HTTP website. It should be fine for general use, but don’t use it to share any personally identifiable information

  • Uses scaffolding to progress to the more difficult problems
  • Provides a variety of questioning techniques to help learners build an understanding of the concepts

  • Does not include application questions or examples
Common Core