Michael de Villiers's Dynamic Geometry Sketches (original) (raw)
Dynamic Geometry Sketches
(Interactive dynamic geometry sketches with JavaSketchpad , Cinderella & GeoGebra )
Michael de Villiers
Dept of Mathematics & Statistics
Kennesaw State University, USA
(Last Update, Student Explorations & Geometric Literacy in Design: 18 January 2009)
Visit p. 4 of my homepage for downloadable articles Downloadable articles on Math & Math Ed
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Circumcyclicquad
Read my paper An interesting duality in geometry
Free Java applets provided by
JavaScript Kit
Explorations for Students (Updated)
Area Ratios of Octagons/Parallelograms
De Villiers points of a triangle (New)
Generalizations of Cross's Theorem
Haruki's Theorem (Three Overlapping Circles)
Locus Problem (fixed chords in circle) (New)
Napoleon's Theorem and some Generalizations & Variations
Nine-point conic and Euler line generalization
Spieker conic and Nagel line generalization
Van Aubel's Theorem and some Generalizations
Other Activities and Links
Dynamically Explore Elliptic (Spherical) Geometry
Dynamically Explore Hyperbolic Geometry
The Importance of Geometric Literacy in Engineering & Design (New)
By Michael de Villiers at profmd@mweb.co.za