Parabola: Locus Definition

The following applet shows a parabola with its focus and directrix. Point P is a point that lies on the parabola itself. Feel free to move the BIG POINTS anywhere you'd like before sliding (or re-sliding) the slider.
Take out the paper-folding activity (on parchment paper) we completed in class yesterday. Use your results from this activity AND your observations from interacting with this applet to answer the remaining questions on Part 2 of this activity.

Quick (Silent) Demo