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GeoGebraGeoGebra Classroom

How to construct a parabola

Topic:
Parabola
Given is a line and a point , not on . A parabola is the set of all points in the plane that are equidistant from (the focus) and (the directrix).
  • Drag the blue point M along the directrix to create points from the parabola.
  • Click the checkbox to see the construction.
  • Drag the Focus and the Directrix to change the parabola.