GeoGebra

Menelaus

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Menelaus A series of four interactive diagrams

The intent is to help visualize the Menelaus proportions in a triangle. K. Frank

  1. Htm.gif Menelaus 1 Ggb.gifGGB download introduces the transversal of a triangle.
  2. Htm.gif Menelaus 2 Ggb.gifGGB download shows the case of a transversal parallel to a side and Thales Theorem.
  3. Htm.gif Menelaus 3 Ggb.gifGGB download shows a non-parallel transversal and the set-up of the Menelaus proportions.
  4. Htm.gif Menelaus 4 Ggb.gifGGB download outlines a proof the Menelaus proportions.