After reviewing characteristics of seven types of triangles, young geometers discover how to find the missing angle of a triangle. Then, they practice identifying triangles, find missing angles, and find missing side lengths of similar triangles.

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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Have groups create a poster on each of the triangles mentioned in the resource—right, acute, obtuse, equilateral, isisceles, scalene, and similar—and hang them around the class for reference
Classroom Considerations
  • Assumes learners are familiar with naming triangles
  • The 14-page packet includes background information on triangles with example problems, 54 practice problems, and answers for the odd numbered questions
  • A great resource for boosting geometry skills
  • None
Common Core