ribes-the-geometric-definition-of-a-parabola-with-respect-to-focus-and-directrix

Question

By the geometric definition of a parabola, which relationship is always true for any point P on the curve?

Accepted Answer

Distance(P, Focus) = Distance(P, Directrix)

Answer

Distance(P, Focus 1) + Distance(P, Focus 2) = constant

Answer

Distance(P, Focus) + Distance(P, Directrix) = constant

Answer

Distance(P, Vertex) = Distance(P, Focus)