Welcome to Geometry Triangle Centers! Online Tutoring. Site created and maintained by Antonio Gutierrez.

Go Geometry from the Land of the Incas. Machu Picchu and Inca Trail

  1. Centroid

  2. Orthocenter

  3. Circumcenter

  4. Incenter, Dynamic Geometry

  5. Excenter, Dynamic Geometry

  6. Apollonius Point

  7. Nine-Point Center, Nine-Point Circle, Euler Line

  8. Gergonne Point

  9. Nagel Point. See also Nagel Point Theorem Proof, Nagel Point Flowchart Proof, Nagel Point Puzzle.

  10. Fermat Point

  11. Feuerbach Point : Acute, obtuse and right triangle
    Interactive Animation

  12. Napoleon Point

  13. Bevan Point

  14. Vecten Point

  15. Symmedian (Lemoine) Point

  16. Morley's Center

  17. Mittenpunkt Point

  18. Schiffler Point

  19. Steiner Point

  20. First Ajima-Malfatti Point

  21. Second Ajima-Malfatti Point

  22. Spieker Center

  23. Triangle centers Word find puzzle.

 

 

 

 1. Centroid, medians

 

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 2.  Orthocenter, altitudes

 

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 3.  Circumcenter, circumcircle, circumradius

 

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 4.  Incenter, incircle, inradius

 

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 5.  Excenter, excircle, exradius

See also: The Bevan Point

 

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 6. Apollonius Point

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7. Nine-Point Center, Euler Line

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 8. Gergonne Point

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 9. Nagel Point.

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 10. Fermat Point

 

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 11. Feuerbach Point

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 12. Napoleon Point

 

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 13. Bevan Point . See: Illustration with animation

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 14. Vecten Point 

 

See also:

 

Triangle with 3 Squares

 

 15. Symmedian (Lemoine) Point 

 

 16. Morley's Center 

 

 17. Mittenpunkt or Middlespoint 

 

 18. Schiffler Point & Four Euler Lines

 

 19. Steiner Point

 

 20. First Ajima-Malfatti Point

 

 21. Second Ajima-Malfatti Point

 

 22. Spieker Center

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Last updated: April 1, 2008