4.5 Investigation with Harmonic Sets
We can work it out.
—John Lennon (1940–1980) and Paul McCartney (1942–  )

  Is the fourth point unique or does it depend on the quadrangle constructed?

To investigate this question, drag points E and F to various locations
To change the harmonic set, drag points A, B, and C.
 To reset to the original settings, type the letter "R" on the keyboard.

What happens when E and F are moved?
Does the quadrangle remain the same?
Does the fourth point, D, of the harmonic set remain in the same position?

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4.5.1 Harmonic SetsBack to Harmonic Sets

Ch. 4 Projective TOC  Table of Contents

  Timothy Peil  Mathematics Dept.  MSU Moorhead

© Copyright 2005, 2006 - Timothy Peil