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Demonstrations 1 - 20 of 106
Flow Time in an Hourglass
New this month
Isoptic Curves of an Ellipse
Updated this month
Definition and Equations of an Ellipse
The Ellipse Problem of Steinhaus
Tilt of the Earth
Hyperboloids and Ellipsoids
Modeling the Hyperboloid of One Sheet
Paper Model of Conic Sections
Focus-Directrix Property of an Ellipse with Dandelin Spheres
Ellipse Rolling around Another Ellipse
Ellipse Rolling around a Circle
Euler's Substitutions for the Integral of a Particular Function
Draw Your Smiley Face
Da Vinci's Construction of an Ellipse
Paper-Folding an Ellipse
Boundary Value Problems for Cone Geodesics
Plane Cross Sections of the Surface of a Cone
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