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TwitchellCircle
Author:
Catherine Twitchell
GeoGebra
New Resources
Bottema's Theorem
Introduction
Stairs (Optical Illusion)
Napoleon's Theorem
Witch of Agnesi - A Classical Construction
Discover Resources
Fertilizer
capabalitiesSurf2
heptadecagon construction
Cylinder in a Sphere
Math art: Spherical lace
Discover Topics
Circumcircle or Circumscribed Circle
Square
Vectors
Terms
Fractal Geometry