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GeoGebra
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Author:
zhangkm
GeoGebra
New Resources
Ellipse as Envelope - Correspondence Method
Ellipse, Hyperbola and Circle as Envelopes
Parallel or Not? (V2)
Rotating Points (Optical Illusion)
Bottema's Theorem
Discover Resources
Motion of a Particle in 1-Dimension (second try)
IM1.8.5 CC 2
H Intro to Sliders
Rectangular Components in Rotated Coordinates
Midpoint Quadliraterals
Discover Topics
Prism
Differential Equation
Perimeter
Difference and Slope
Quadratic Equations