A parabola is the set of all points in a plane that are equidistant from both a point called the focus and a line called the: directrix
A parabola is a plane curve formed by a point moving so that its distance from a fixed point is equal to its distance from a fixed line.
A parabola is approximately U-shaped.
It is the graph of a quadratic function.
A fix point is called as the focus and a fixed straight line is the directrix of the parabola.
The fixed point does not lie on the fixed line. (i.e., the focus does not lie on the directrix of the parabola).
Therefore, A parabola is the set of all points in a plane that are equidistant from both a point called the focus and a line called the: directrix
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