Understand the Properties of the Interior Angles of Triangles

This Understand the Properties of the Interior Angles of Triangles video also includes:

Is there a relationship between the 180º in a triangle and the 180º in a straight angle? Watch how two transversals create one triangle, and prove that the angles in a triangle will always equal 180º. 

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CCSS: Designed
Instructional Ideas

  • Use as an introductory lesson before teaching angle relationships
Classroom Considerations

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Pros

  • Explains the types of angle relationships and why they are given their names
  • Additional videos in the series provide for further practice with angles
Cons

  • None
Common Core