ok so here is some help:
Point: any singular location on the line. (basically the dots with letters)
line segment: connects any two points on a given line. Is named using the two points. (LM and MN are two line segments)
rays: a line that is only infinite in one direction. it has a point on one end and the other has to have an arrow on its side. (an example is MN)
Name the line: a line can be named using any two points on a line.
draw a ↔ over line names, --> over rays, and a -- over line segments
