Lesson Details


  • Name: Exterior Angles
  • Code: M.4.9.A.7
  • Specification Reference: G3
  • Keywords: Polygon, Interior, Exterior, Sides, Regular, Irregular.
  • Objectives: 1. To review how to find the interior angles of polygons. 2. To discover how to find the sum of exterior angles. 3. To be able to find missing exterior angles in regular and irregular polygons.
  • Competency: To review how to find the interior angles of polygons.
  • Proficiency: To discover how to find the sum of exterior angles.
  • Mastery: To be able to find missing exterior angles in regular and irregular polygons.

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