Dynamic Geometry, Interactive Geometry Software IGS, Geometric Constructions

## Dynamic Geometry, IGS - Index Page 1

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

First Ajima-Malfatti Point
Animated illustration.

Second Ajima-Malfatti Point
Interactive illustration.

Apollonius' Problem for Three Circles Interactive illustration.

Dynamic Geometry Software: GeoGebra 4.2 Help Document
GeoGebra is a dynamic geometry software. Constructions can be made with points, vectors, segments, lines, polygons, conic sections, and functions.
Interactive Mind Map

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.

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