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Demonstrations 1 - 20 of 36
Focus-Directrix Property of an Ellipse with Dandelin Spheres
New this month
Da Vinci's Construction of an Ellipse
Paper-Folding an Ellipse
Dandelin Spheres for an Ellipse
Reflections in an Elliptical Region
Five Points Determine a Conic Section
Locus of Points Definition of an Ellipse, Hyperbola, Parabola, and Oval of Cassini
Area of an Ellipse
Conic Sections: Equations and Graphs
Problems on Circles XI: Perpendicular Tangents to an Ellipse
Reflective Properties of Conic Sections
Keplerian Orbital Elements
Points around an Ellipse
Small Lattice Ellipses
Blood Spatter Trigonometry
Motion of a Planet around a Star
Ellipse and Friends
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