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Focus-Directrix Definition of an Ellipse
Author:
Norm Prokup
Topic:
Ellipse
GeoGebra
New Resources
Icosahedron
Poorly Drawn Parallelograms
Average Rate of Change: Graph a Function (2)
Construct a Conic
alg2_05_05_01_applet_exp_flvs
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Linear regression visualizer - residual sum of squares
ASS - Oberbroeckling
Slope Lab
Ordering Simple Fractions
Parabolspeil
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Similar Triangles
Median Line