Parabola Drawn From Definition (up-down)
Parabola - The set of all points the same distance from a point and a line.
Position the directix using points A and B.
Position the Focus.
Move point D along the directrix to construct the parabola.
Press Ctrl-F to delete the trace.
Jerel L. Welker
Lincoln Southwest High School
Lincoln, NE
jwelker@lps.org