The latus rectum of a parabola is a line passing through its focus and perpendicular to its axis.

The length of the latus rectum of a parabola is always equal to four times the distance of focus from the vertex of the parabola. This post explains how to find the length of the latus rectum of a parabola.

Latus rectum is the line passing through the focus and perpendicular to the axis of a parabola |