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Collinear Points, Theorems and
Problems - Table of Content
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Points, Theorems and Problems - Index.
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Lemoine Theorem
Collinear Points. |
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Nine-Point Center,
Nine-Point Circle, Euler Line.
Interactive illustration.
Collinear Points.
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Pappus Theorem.
Dynamic Geometry.
Step-by-Step construction, Manipulation, and animation.
Collinear Points. |
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Interactive
Gergonne Line and Nobbs Points.
Dynamic Geometry.
Step-by-Step construction, Manipulation, and animation.
Collinear Points. |
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Interactive
Simson Line.
Dynamic Geometry.
Step-by-Step construction, Manipulation, and animation.
Collinear Points. |
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Sawayama -Thebault's
theorem
Collinear Points.
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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. |
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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. |
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Triangle with the bisectors of the
exterior angles. Collinearity.
Key concept:
Menelaus Theorem.
Collinear Points |
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Complete Quadrilateral: Ortholine-Steiner Line.
Step-by-Step construction, Manipulation, and animation
Collinear Points. |
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Triangle and Squares Theorem 1:
with Interactive Geometry Software
Step-by-Step construction, Manipulation, and animation.
Collinear Points. |
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Newton's
Theorem, Newton-Gauss Line: Complete quadrilateral theorem. Using
TracenPoche Dynamic Geometry Software,
Online Step-by-Step construction, manipulation, and animation.
Collinear Points. |
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Schiffler Point: Four Euler Lines with interactive animation and
manipulation.
Collinear Points. |
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Pascal's Mystic Hexagram Theorem Proof |
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Newton's
Theorem: Newton's Line. Circumscribed quadrilateral, midpoints of
diagonals, center of the circle inscribed.
Collinear Points.
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Equilic Quadrilateral.
Collinear Points. |
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Proposed
Problem 456.
Three tangent circles, Center, Chord, Secant, Collinear. |
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Proposed
Problem 392.
Triangle, Parallel lines, Concurrent lines. |
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Proposed
Problem 391.
Triangle, Parallel lines, Collinear points. |
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Proposed
Problem 390.
Triangle, Parallel lines, Collinear points. |
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Proposed Problem
323.
Triangle, Incenter, Circumcenter, Equal circles, Collinearity. |
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Proposed Problem
321.
Triangle, Incenter, Excircle, Midpoint of the Altitude, Collinearity. |
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Proposed Problem
320.
Triangle, Circumcircle, Incenter, Excenter, Collinear points. |
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Proposed Problem
318.
A Scalene triangle, Altitudes, Collinear points. |
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Proposed Problem
319.
Triangle, Altitudes, Perpendiculars, Collinear points. |
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Proposed Problem
133. Triangle, Interior and
Exterior Angle Bisectors,
Collinear Points.
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The Bevan Point The
circumcenter of the excentral triangle. Illustration with animation.
Collinear Points.
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Simson Line. A proof
of Simson line with animation.
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Geometry Online
Glossary. Collinear Points.
Geometry Glossary based on the new New York State
mathematics standards initiative. |
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Interactive Geometry Glossary using AnswerTips
technology.
Nonagon or Enneagon. |
