## A geometrical treatise of the conic sections: in which the properties of the sections are derived from the nature of the cone, in an easy manner, and by a new method |

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absciss asymptote CY axes bisected bola Book cafe cone conic section conical surface conjugate axis conjugate diameters conjugate hyperbolas diameter LV diameter MN directrix drawn parallel E. D. Cor ellipse or hyperbola equal fame point focus F given in position given point Hence inscribed intersection joining the points KLNO let the line let the right line be drawn line MN line PT meeting the asymptotes meeting the section meter opposite hyperbolas opposite sections opposite surfaces ordinately applied parabolic segment parallelogram parameter pass perpendicular point F point of concourse points of contact preceding Prop Proposition rallel rect rectangle right angle right line joining right line parallel right line touching secant second diameter section or opposite semidiameter side square of CM tangent drawn touch the section transverse axis transverse diameter trapezium triangles vertex vertices