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Outline
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
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
New Resources
Ellipse, Hyperbola and Circle as Envelopes
Construct a Square
Witch of Agnesi - A Classical Construction
Slope of a Straight Line: Run and Rise
Play C3 E3 G3 C4_C4
Discover Resources
Pedal Triangles
TriangelAngelSum
Research Placement
math171_4_2_riemann_sum
Reflection 7
Discover Topics
Interest Calculation
Kite
Trigonometry
Derivative
Statistics