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GeoGebra
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
New Resources
Lagrange Multipliers with One Constraint. Examples
Secant Theorem
Probability: Selecting Balls
exterior angle theorem of the triangle
Complex Numbers (Polar Form)
Discover Resources
Surface Area of Rectangular Prism
Day 1 Thoughts
Alternate Exterior Angles Theorem (V1)
Kvadratskabelon mønster 1
Trapezoid - Interactive
Discover Topics
Solids or 3D Shapes
Unit Circle
Tangent Function
Symmetry
Coordinates
