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The Director Circle of a Central Conic Section
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Ayoub, Ayoub B. – Mathematics and Computer Education, 2007
Each ellipse and hyperbola has a circle associated with it called the director circle. In this article, the author derives the equations of the circle for the ellipse and hyperbola through a different approach. Then the author concentrates on the director circle of the central conic given by the general quadratic equation. The content of this…
Descriptors: Geometric Concepts, Geometry, Equations (Mathematics), Mathematics Education