Trisecting a Line Segment (with world record efficiency!)

Index of Trisection Pages

Abstract and Table of Contents

Opening Trisection Page

Coble
        Sketch of Proof for Coble Construction
 

 2 Circles and 3 Lines
        Sketch of Proof for 2 circles and 3 lines Construction

 3 Circles and 2 Lines:
        Sketch of Proof of 3 circles and 2 lines Construction

 4 Circles:
          Sketch of Proof for 4 circles Construction 
          proof that three circles is not enough
          proof that two circles and two lines is not enough

Mohr-Mascheroni and Poncelet-Steiner
          Sketch of Proof for Mohr-Masheroni Construction
          proof that seven circles are needed
          Sketch of Proof for Poncelet-Steiner Construction
          proof that eight lines are needed for Martin Convention Construction

Trisecting Angles

Instructor's Guide (Word doc)

Annotated References
         

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