Octagon Tile

A connecting-the-dots activity seems too easy for seventh grade but connecting vertices may prove a challenge. Class members first examine a figure created by drawing squares around the inside of an octagon and connecting the vertices. they then determine lines of symmetry and the measures of specified angles in the figure.

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CCSS: Designed
Instructional Ideas

  • Use the task as an assessment question
Classroom Considerations

  • Note that the task uses British spellings
  • Learners need to be able to find angle measurements, determine lines of symmetry, and identify octagons
Pros

  • Well-drawn diagrams are great for visual learners
  • Includes solutions to the task
Cons

  • Rubric contains unexplained abbreviations
Common Core