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Julia Neal

A parabola is the set of all points equidistant from a line, called the directrix, and a fixed point, called the focus.

Click here to open a GSP sketch of a parabola generated by an animation and a trace of a constructed point.

Click here to open a GSP sketch of a parabola generated by an animation of a point and a trace of the tangent line.

Here is the parabola generated by the locus command from a constructed point.

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