Here’s a short screencast I made that explains how to use Geometer’s Sketchpad and the concept of locus to generate parabolas, ellipses, and hyperbolas.

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Here’s a short screencast I made that explains how to use Geometer’s Sketchpad and the concept of locus to generate parabolas, ellipses, and hyperbolas.

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A conic section is not a perfect ellipse which is a cylindric section which is the shape of the orbits of the planets round the Sun and also of the artificial bodies round the Earth.

Hello Peter,

Could you elaborate a little more? Are you saying that the ellipse I created using locus is a cylindrical section as opposed to a conic section, or vice versa?