Geometry Angle Investigations

Terry Lee Lindenmuth, Feb 15, 2016


  • 1. Relationship of Angles
  • 2. Parallel Lines Cut by a Transversal
  • 3. Parallel Lines Cut by Transversal with Solution
  • 4. Sum of the Angles of a Triangle
  • 5. Sum of Angles of a Quadrilateral
  • 6. Sum of the Interior Angles of a Pentagon
  • 7. Exterior Angles of a Quadrilateral (Convex)
  • 8. Sum of the Exterior Angles of a Convex Pentagon
  • 9. Isosceles Triangle Investigation
  • 10. Isosceles Triangle
  • 11. Measure of an Angle in a Semi-Circle
  • 12. Ratio of Central Angle & Inscribed Angle of the Same Arc
  • 13. Exterior Angles of a Polygon
  • 14. Sum of Angles of a Triangle
  • 15. Inscribed Angle in Semi-Circle
  • 16. Circle: Inscribed v Central Angle
  • 17. Protractor Practice Scored
  • 18. Protractor Practice ± 1 Scored

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Relationship of Angles

Move the points with labels.
Observe the relationship of the angles; compliments, supplements, vertical, and/or adjacent.
– Terry Lee Lindenmuth

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