Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsLocus of Points Definition of an Ellipse, Hyperbola, Parabola, and Oval of Cassinihttp://demonstrations.wolfram.com/LocusOfPointsDefinitionOfAnEllipseHyperbolaParabolaAndOvalOf/]]>http://demonstrations.wolfram.com/LocusOfPointsDefinitionOfAnEllipseHyperbolaParabolaAndOvalOf/Ellipses and Hyperbolas with the Same Focal Pointshttp://demonstrations.wolfram.com/EllipsesAndHyperbolasWithTheSameFocalPoints/]]>http://demonstrations.wolfram.com/EllipsesAndHyperbolasWithTheSameFocalPoints/Conic Sections: Equations and Graphshttp://demonstrations.wolfram.com/ConicSectionsEquationsAndGraphs/]]>http://demonstrations.wolfram.com/ConicSectionsEquationsAndGraphs/Reflection from a Freehand Polynomial Mirrorhttp://demonstrations.wolfram.com/ReflectionFromAFreehandPolynomialMirror/]]>http://demonstrations.wolfram.com/ReflectionFromAFreehandPolynomialMirror/A Parabolic Mirrorhttp://demonstrations.wolfram.com/AParabolicMirror/]]>http://demonstrations.wolfram.com/AParabolicMirror/Parabolic Envelope from Congruent Triangleshttp://demonstrations.wolfram.com/ParabolicEnvelopeFromCongruentTriangles/]]>http://demonstrations.wolfram.com/ParabolicEnvelopeFromCongruentTriangles/Conic Section Curveshttp://demonstrations.wolfram.com/ConicSectionCurves/]]>http://demonstrations.wolfram.com/ConicSectionCurves/