Collinear Points, Theorems and
Problems  Table of Content 1




Points, Theorems and Problems  Index.


Lemoine Line Theorem, Interactive illustration.
HTML5 Animation for iPad and Nexus
Adobe Flash Animation 

NinePoint Center, NinePoint Circle, Euler Line.
Interactive illustration.
Collinear Points.


Pappus Theorem. Dynamic Geometry.
StepbyStep construction, Manipulation, and animation.
Collinear Points. 

Interactive
Gergonne Line and Nobbs Points.
Dynamic Geometry.
StepbyStep construction, Manipulation, and animation.
Collinear Points. 

Interactive Simson
Line. Dynamic Geometry.
StepbyStep construction, Manipulation, and animation.
Collinear Points. 

GeoGebra, Dynamic Geometry: Lemoine Line of a Triangle.
HTML5 Animation for Tablets (iPad, Nexus..) 

GeoGebra, Dynamic Geometry: Simson Line of a Triangle.
HTML5 Animation for Tablets (iPad, Nexus..) 

Sawayama Thebault's
theorem
Collinear Points.


Monge &
d'Alembert Three Circles Theorem II with Dynamic Geometry. You can
alter the geometric construction dynamically in order to test and prove
(or disproved) conjectures and gain mathematical insight that is less
readily available with static drawings by hand.
Collinear Points. 

Monge &
d'Alembert Three Circles Theorem I with Dynamic Geometry. You can
alter the geometric construction dynamically in order to test and prove
(or disproved) conjectures and gain mathematical insight that is less
readily available with static drawings by hand.
Collinear Points. 

Triangle with the
bisectors of the exterior angles. Collinearity.
Key concept:
Menelaus Theorem.
Collinear Points 

Complete Quadrilateral: OrtholineSteiner Line.
StepbyStep construction, Manipulation, and animation
Collinear Points. 

Triangle
and Squares Theorem 1: with Interactive Geometry Software
StepbyStep construction, Manipulation, and animation.
Collinear Points. 

Newton's Theorem,
NewtonGauss Line: Complete quadrilateral theorem. Using TracenPoche
Dynamic Geometry Software, Online
StepbyStep construction, manipulation, and animation.
Collinear Points. 

Schiffler Point: Four Euler Lines with interactive animation and
manipulation.
Collinear Points. 

Pascal's Mystic Hexagram Theorem Proof 

Newton's
Theorem: Newton's Line. Circumscribed quadrilateral, midpoints of
diagonals, center of the circle inscribed.
Collinear Points.


Equilic
Quadrilateral.
Collinear Points. 
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