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an ellipse from 2 circles!!
Author:
Dave Van Leeuwen
Topic:
Circle
,
Ellipse
Shows a 2-circle property of an ellipse
GeoGebra
New Resources
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Quiz: Finding Average Rate of Change
Average Rate of Change: Graph a Function (1)
探究由平行線和截線所成的角
Flip Flop
Discover Resources
Right Triangle inside Rectangle with all sides integers
recordalpha
Bruce.Triangles.4
NicolaLynchCollier_TestingSimilarityTheorems
Factoring with Trees
Discover Topics
Fractal Geometry
Parametric Curves
Solids or 3D Shapes
Numbers
Sphere