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Author:
David Peterson
For additional details on how to construct parallel and perpendicular lines, please see the appendix
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Ellipse as Envelope - Correspondence Method
Ellipse, Hyperbola and Circle as Envelopes
Viviani's Window
Parallel or Not? (V2)
cylinder net slider
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Solving one variable equations with GeoGebra (1)
Who am I?
Riemann-Summen
#2.)
Picture Construction 4 transversals
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Median Value
Standard Deviation
Percentages
Parabola
Variance