Constructive Geometry of Plane Curves: With Numerous Examples

anharmonic ratio asymptotes auxiliary circle bisects the angle centre point chord of contact circle centre circles touching cone conic conic section conjugate diameters conjugate points construction corresponding curve being given cutting cutting CB describe a circle describe an ellipse describe an hyperbola determined distance draw a parabola ellipse fixed point foci focus F given circle given Fig given lines given point given tangent harmonic mean homographic involution latus rectum length line joining locus major axis mean proportional meeting the directrix opposite sides ordinate parallel pass pencil perpendicular point of contact point of intersection polar pole PROBLEM Prop radical axis radii radius rectangle right angle second focus segments shew shewn similar triangles Similarly tangent PT three given transversal vertex vertices