Circles: Angle, Chord, Secant, Tangent Properties & Theorems

jjennings, 13/7/2017

In this GeoGebra book you will find several attached worksheets. Please refer to each worksheet for a description of the illustrated circle properties and theorems. This book is a positive example of how students can learn properties and theorems related to circles while using a user friendly graphing program called GeoGebra. I would recommend that educators consider creating assignments for students to create such books that illustrate interactive geometry postulates, theorems, and corolarrys. Additional written descriptions and explanations are included on each of the five included worksheets.


  • 1. Central and Inscribed Angle Relationships
  • 2. Perpendicular Bisector of Chord
  • 3. Area of a Sector
  • 4. Product of intersecting chord segments
  • 5. Secant and Tangent Theorems of Circles

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Central and Inscribed Angle Relationships

– jjennings

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