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Demonstrations 21  40 of 104
A General Cone
Locating the Complex Roots of a Quadratic Equation
Caustics Generated by Rolling Circles
Practice Identifying Surfaces of Degree at Most Two
Numerical IsoOptic Curve of the Ellipse
IsoOptic Curve of the Ellipse
Implicit Function Transformations Quiz
The Ellipsograph, a Mechanism for Constructing an Ellipse
Dandelin Spheres for an Ellipse
Area under a Parabola by Symmetries
The Parabola's Evil Twin: Real and Nonreal Roots of a Real Quadratic
Tangents to a Rotating Ellipse
Projecting the Tangent Point of an Ellipse
Constructing Quadratic Curves
Focus and Directrix in a Quadratic Bézier Curve
Tracing a Line Segment Moving along an Ellipse
Cissoid of Diocles
Connecting Skew Axles with Hyperboloidal Gears
Rolling One Parabola on Another
Maximizing the Volume of a Right Circular Cone with Given Slant Length
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