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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
Concepts
line segments, planes, 2-d shapes, 2-d, triangles, isosceles triangles, acute triangles, obtuse triangles, scalene triangles, equilateral triangles
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Additional Tags
line segments, planes, triangles
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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
Pros
  • Provides a key to the handout
  • Contains reflections questions for both the class and the teacher
Cons
  • None
Common Core
MP6 HSG-CO.C.10 HSG-C.A.3