When the focus and directrix are used to derive the equation of a parabola, two distances were set equal to each other. = The distance between the directrix and is set equal to the distance between the and the same point on the parabola.
Answer
Selection 1:
a point on the parabola
Selection 2:
focus

Question

When the focus and directrix are used to derive the equation of a parabola, two distances were set equal to each other. = The distance between the directrix and is set equal to the distance between the and the same point on the parabola.

Answer

Selection 1:

a point on the parabola

Selection 2:

focus

Revolt · Accepted Answer

a point on the parabola; Selection 1: a point on the parabola; Selection 2: focus