It can be parellel like this
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A line segment is a line with two points. When drawn, there are no arrows coming out of the points.
line segment
There is only one line (or line segment) that can be drawn between two distince points.
radius
Chord.
the median is drawn from the vertex to the midpoint of the opposite side
one
Any line that is drawn or printed is a real life approximation. A line is an abstract geometric concept which has a length but no thickness. A line segment is of finite length. Since it is impossible to draw an infinitely long line, whatever is drawn is a segment. However, it is an approximation because at the microscopic, or submicroscopic level, it is impossible for it to have no thickness at all.
apothem
A segment.
A line segment is actually a normal line:( yes i know i couldn't believe it myself either), a real line goes on forever, (both ways up and down and never end). Whereas a line segment, has a ending at both sides no matter how long the line segment is drawn...It is still a line segment. So basically, you could draw a long line segment for the rest of your life and that would still be a line segment. So to round it off. You.Can.Never.Draw.A.Line. Sorry :}
A straight line segment can be drawn joining any two points.