Apollonius Revisited Equidistance

If you wish to explore parabola to be created by an animation follow the next two stepselse you should skip directly to the locus construction step.-Select and Trace P via Display menuP (point on parabola)FocusdirectrixQ Movable Point-Select Q the movable point and create an Animation Button via Edit Menu ActionButton Animation. Enjoy!Animate PointFocusP (point on parabola)directrixQ Movable Point-Select Q and then P and Construct Locus. Remember Locus means: as the point Qmoves on its path (the directrix) what will the constructed point P do? It is basically apermanent trace.LocusFocusP (point on parabola)directrixQ Movable Point