Three Conics Derived from Perpendicular Lines
Alberto Mendoza
Abstract. Given a triangle ABC and a generic point P on its plain, we consider the rectangular hyperbola H which is the isogonal conjugate of the line OP where O is the circumcenter of the triangle. We also consider the line L perpendicular to OP at the point P, the conic E which is the isogonal conjugate of this line and the inscribed parabola P, tangent to the line L. We discuss some relations between this three conics.