Go to this Desmos graph https://www.desmos.com/calculator/tsfynm2to8 It shows two each of the four conic sections Circles, Ellipses, Hyperbolas, Parabolas Note: A hyperbola has two branches. Only one is shown in the image. A cone actually has two frustums. The image only shows one frustum. http://www.intmath.com/plane-analytic-geometry/conic-sections-summary-interactive.php
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