Dynamic Geometry 1451: Orthopole of a Line

If perpendiculars AA', BB', and CC' are dropped to any line L from the vertices of a triangle ABC, then the perpendiculars A'A''. B'B'', and C'C'' to the opposite sides BC, AC, and AB, respectively, are concurrent at a point P called the orthopole of the line L and triangle ABC.

Static Diagram of the Orthopole of a Line

Dynamic Geometry 1451: Orthopole of a Line, Triangle, concurrent perpendiculars. Using GeoGebra



Step-by-step diagrams after exporting from GeoGebra

Step-b-step diagrams exporting from geogebra, Dynamic Geometry 1451: Orthopole of a Line, Triangle, concurrent perpendiculars.


Poster of the Orthopole of a Line using iPad Apps

Poster of Orthopole of a Line, Dynamic Geometry. Using iPad

Classroom Resource:
Interactive step-by-step animation using GeoGebra

This step-by-step interactive illustration was created with GeoGebra.

  • To explore (show / hide): click/tap a check box.
  • To stop/play the animation: click/tap the icon in the lower left corner.
  • To go to first step: click/tap the "Go to step 1" button.
  • To manipulate the interactive figure: click/tap and drag the points or figures.

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