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  • ATC Triangle Centers
  • Circles Associated with Triangles
  • Triangles Associated with Other Triangles
  • Centers Associated with the Medial Triangle
  • Centers Associated with the Incircle
  • The Fermat Point
  • The Orthocenter

ATC Triangle Centers

Author:
Steve Phelps
ATC Triangle Centers

Table of Contents

  • Circles Associated with Triangles

    • Constructing the Circumcircle
    • Constructing the Incircle
    • Constructing an Excircle
    • Constructing the Nine-Point Circle
    • The Circumcircle and the Nine-Point Circle
  • Triangles Associated with Other Triangles

    • The Cevian Triangle
    • The Pedal Triangle
    • The Wallace-Simson Line
    • Minimizing the Triangle Perimeter
  • Centers Associated with the Medial Triangle

    • The Spieker Center
    • The Nine-Point Center
    • A Triangle Cleaver
    • Cleavers and Angle Bisectors
    • Three Cleavers Concur
  • Centers Associated with the Incircle

    • The Gergonne Point
    • The Nagel Point
    • The Feuerbach Point
  • The Fermat Point

    • Minimizing the Sum of Distances
    • The Fermat Point Construction
  • The Orthocenter

    • Tracing the Orthocenter
    • The Orthocenter Locus
    • The Orthocentric Quartet
Next
Constructing the Circumcircle

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Discover Resources

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  • Dilation
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  • Arithmetic
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