Triangle Classification

This Triangle Classification lesson plan also includes:

Oh triangle, where are the points that will make your type? Given a line segment, pairs determine the location of a third point to create the six different types of triangles. The teacher provides a jumping off point by leading a discussion on creating right triangles. With the online activity, pupils trace a locus of points that create specific types of triangles.

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CCSS: Adaptable
Instructional Ideas
  • Have the class discuss where on the perpendicular bisector to place a point to create an obtuse, right, acute, and equilateral triangle
  • Require class members to provide a justification for each region of points and the type of triangle formed
Classroom Considerations
  • The class should have an understanding of properties of triangles
  • Provides a key to the handout
  • Contains reflections questions for both the class and the teacher
  • None
Common Core