Equilateral Triangles: Lesson

This Equilateral Triangles: Lesson video also includes:

Take a second look at triangles that are equal all the way around. The video reminds viewers what an equilateral triangle is and points out that the three angles are the same. Using the fact that equilateral triangles are also isosceles, the portion of a larger geometry playlist discusses properties of equilateral triangles.

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CCSS: Adaptable
Instructional Ideas

  • Develop informal proofs of the properties of equilateral triangles
Classroom Considerations

  • Individuals should know the properties of isosceles triangles
  • Assumes the class knows how to solve linear equations
Pros

  • Uses properties of equilateral triangles in examples
  • Links to other equilateral triangle resources
Cons

  • None
Common Core