Definition of a Parabola (Horizontal Opening) — Focus-Directrix Construction

2020-03-10 00:46
This GeoGebra example dynamically demonstrates the geometric construction of a horizontally opening parabola using the focus-directrix definition. It illustrates the fundamental property that any point on the parabola is equidistant from the focus F and the directrix. The construction includes the directrix, focus F, a moving point D on the directrix, the perpendicular bisector of segment DF, and