WHAT IS PARABOLA
The fixed F point is called the focus of the parabola, and the
straight line is called the rectification of the parabola.
The line passing through point F and perpendicular to line d is
called the parabola axis.
Parabola consists of two symmetrical arms according to this
axis.
The distance of each point on the parabola to the focal point is
equal to the distance from the rectifier. The line that connects any
two points of the parabola is called a beam.
Half of the beam perpendicular to the parabola axis passing
through the focus is called the parameter and is indicated by "p".
The point where the parabola crosses the axis is called the
vertex.