Mathematics

The latus rectum is the chord through the focus that's perpendicular to the parabola's axis of symmetry—it's a key "width" measurement that reveals how "open" or "tight" the parabola is. For $y^2 = 4ax$, the focus lies on the $x$-axis, so you just need to find where a vertical line through the focus intersects the parabola, then measure the distance between those two points.

The latus rectum is the chord through the focus that's perpendicular to the parabola's axis of symmetry—it's a key "width" measurement that reveals how "open" or "tight" the parabola is. For $y^2 = 4ax$, the focus lies on the $x$-axis, so you just need to find where a vertical line through the focus intersects the parabola, then measure the distance between those two points.