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The Shape of an Ellipse

Gregory D. Foley 

November 2011, Volume 105, Issue 4, Page 274

Abstract:
Ellipses vary in shape from circular to nearly parabolic. An ellipseā€™s eccentricity indicates the location of its foci, but its aspect ratio is a direct measure of its shape.

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Keywords:
Parametric Equations
Polar Coordinates
Article
Calculators
Computers
Analytic Geometry
Conic Sections
Grades 9-12
Teacher
Transformations