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Proposition 13 proof
Author:
Jeff Barrett
GeoGebra
New Resources
Ellipse, Hyperbola and Circle as Envelopes
Piano. Keyboard.
Ellipse as Envelope - Correspondence Method
Stairs (Optical Illusion)
Angles and Intersecting Lines: Quick Investigation
Discover Resources
Absolute Value
Quadrantal Angles
Interactive Posters
chapter 3 take home quiz
Figure 11.5. Brianchon’s theorem for a convex hexagon
Discover Topics
Arithmetic Operations
Poisson Distribution
Cuboid
Conic Sections
Matrices