Dynamic Geometry - Index

Dynamic Geometry  or  Interactive Geometry
Software are computer programs which allow
one to create and then manipulate geometric
constructions.

Geometry Expressions.

C.a.R. Compass and Ruler: Applets.

TracenPoche Interactive Geometry Software Applications.

Word Cloud of Dynamic Geometry or Interactive Geometry Software and News.

Interactive geometry software for the iPhone and iPod Touch.
Video: the first construction is a regular hexagon given its center and one vertex. The second construction is the nine-point circle.

Archimedes Arbelos and Square 2. Dynamic Geometry Software.
Step-by-Step construction, Manipulation, and animation.

Archimedes Arbelos and Square 1. Dynamic Geometry Software.
Step-by-Step construction, Manipulation, and animation.

First Ajima-Malfatti Point
Animated illustration.

Second Ajima-Malfatti Point
Interactive illustration.

Apollonius' Problem for Three Circles Interactive illustration.

Bottema's Theorem.
Invariance of an isosceles right triangle.
Triangle and Squares with Interactive Geometry Software
Step-by-Step construction, Manipulation, and animation.

Complete Quadrilateral: Ortholine-Steiner Line.
Step-by-Step construction, Manipulation, and animation
Dynamic Geometry Software.

Eight-Point Circle Theorem
Step-by-Step construction, Manipulation, and animation.
Dynamic Geometry.

Equal Incircles Theorem. Interactive.

Eyeball Theorem: Animated Angle to Geometry Study.

Feuerbach Points and Nine-Point Circle with interactive animation, manipulation, and step-by-step construction.
Incenter, Incircle, Excircles.

Four Circles Theorem Using Interactive Dynamic Software
Step-by-Step construction, Manipulation, and animation.

Geometry Expressions.

TracenPoche Interactive Geometry Software Applications.

Interactive Gergonne Line and Nobbs Points. Dynamic Geometry.
Step-by-Step construction, Manipulation, and animation.

Interactive Hinged tessellation. Square tessellation - Dynamic Geometry.
C.a.R. (Compass and Ruler). This Java applet requires Java 1.3 or higher.

Screencast Tutorial: Interactive Square Hinged Tessellation.
C.a.R. (Compass and Ruler).

Incenter, Excenter, Incircle, Excircle Using TracenPoche Dynamic Software
Step-by-Step construction, Manipulation, and animation.

Isogonic-Jacobi Theorem: Using TracenPoche Dynamic Geometry Software

Lemoine Theorem
Interactive illustration.

Marion Walter's Theorem: Triangle and Hexagon areas: Using TracenPoche Dynamic Geometry Software

Miquel's Pentagram Theorem Interactive proof with animation and key theorems.
 

Miquel's Pentagram with Dynamic Geometry. You can alter the pentagram dynamically in order to test and prove (or disproved) conjectures and gain mathematical insight that is less readily available with static drawings by hand. Requires Java Plug-in 1.3 or higher. Please be patient while the applet loads on your computer.

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. Requires Java Plug-in 1.3 or higher. Please be patient while the applet loads on your computer.

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. Requires Java Plug-in 1.3 or higher. Please be patient while the applet loads on your computer.

Newton's Theorem, Newton-Gauss Line: Complete quadrilateral theorem. Using TracenPoche Dynamic Geometry Software, Online Step-by-Step construction, manipulation, and animation.

Morley's Triangle & Center: with interactive animation and manipulation.

Nagel Point Theorem. Proof.
Triangle and excircles. Animation. 

Newton's Theorem, Newton-Gauss Line: Complete quadrilateral theorem. Using TracenPoche Dynamic Geometry Software, Online Step-by-Step construction, manipulation, and animation.

Nine-Point Center, Nine-Point Circle, Euler Line (English version).
Circumcenter, Centroid, Orthocenter
Interactive illustration.

Orthopole of a Triangle: Using TracenPoche Dynamic Geometry Software

Pappus Theorem. Dynamic Geometry.
Step-by-Step construction, Manipulation, and animation.

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

Seven Circles Theorem. Animation.

Interactive Simson Line. Dynamic Geometry.
Step-by-Step construction, Manipulation, and animation.

Simson Line. Animation, Proof.

Taylor Circle Theorem Using TracenPoche Dynamic Software
Step-by-Step construction, Manipulation, and animation.

Trapezoid, Triangle, Diagonals, Midpoints. Dynamic Geometry.
Step-by-Step construction, Manipulation, and animation.
Prove proposition.

Three Circles Theorem Using TracenPoche Dynamic Software

Triangle: Incircle, Perpendicular, Angle Bisector. Dynamic Geometry.
Step-by-Step construction, Manipulation, and animation.
Prove proposition.

Triangle, Medians, Six Circumcenters Concyclic. Dynamic Geometry.
Step-by-Step construction, Manipulation, and animation.
Prove proposition.

Three Tangent Circles Theorem Using TracenPoche Dynamic Software
Step-by-Step construction, Manipulation, and animation.
Incenter of a triangle.

Triangle and Squares Theorem 1: with Interactive Geometry Software
Step-by-Step construction, Manipulation, and animation.