Instrument for constructing a parabola
- Author:
- Andreas Lindner
- Topic:
- Constructions, Parabola
In former times parabolas could be drawn with instruments like the one in the applet.
Exercise
- Switch on the trace of point P and move point S.
- Show the parabola which is drawn with the current adjustment.
- Explane why the curve is a parabola.
- Move focus F and watch how the form of the parabola changes.
Andreas Lindner