Parabola Constructs a parabola. The general function of a parabola is , with ; or, completing the square, Syntax parabola(Real, Point, Vector) parabola(Real, Point) parabola(Real, Vector) parabola(Real) Description parabola(Real, Point, Vector) Given a real , a point and a vector , constructs a parabola with focal semidistance equal to , vertex at point and direction given by . parabola(Real, Point) Given a real and a point , constructs a parabola with focal semidistance equal to , vertex at point and direction given by . parabola(Real, Vector) Given a real and a vector , constructs a parabola with focal semidistance equal to , vertex at the origin and direction given by . parabola(Real, Point, Vector) Given a real , constructs a parabola with focal semidistance equal to , vertex at the origin and direction given by . Related functions Focal semidistance, Focus, Directrix Table of Contents Syntax Description Related functions