To be able to make edge of plane thicker than other three sides


I have drawn a plane on a 3d model and using edge geometry (code sample below), I was able to draw an outline of the plane. What I wanted is to have one edge thicker than the other three sides.

const edges = new THREE.EdgesGeometry(planeGeometry);
const line = new THREE.LineSegments(edges, new THREE.LineBasicMaterial({
color: ‘yellow’

Here is the screenshot of the plane that I have, You can see the yellow edge is drawn around it but What I need to is to have bottom edge thicker.

Any help or code samples?

Thank you.