PU6L2b Conic Section Circles part II
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curveintersectionconicalanalyticgeometrycoordinatesplanefocusdirectrixeccentricityfixedratiohyperbolaparabolaellipsespecialcaseapolloniusofpergadegenerateasymptoteaxisvertexsymmetrycenterdistanceformulapythagoreantheoremtransversecongjugateinertiaslopeimaginarydiagonalformstandardgeneralcompletingthesquaretipaxesparaboloideuclideanarmsbranchesmajorminorsemi-majorsemiminorperpendicularbisectormirror