Going through each position was a line segment indicating his idea of where he wanted that ship to go.

The above two line segments are perpendicular to each other.

We now have 4 line segments which are touching at the ends.

Now, a line segment labeled with the numbers 1, 2, and 3.

Here is an analogy: If you look at a piece of paper edge on, it looks like a line segment.

However, in a physical soap film, the connecting line segment would not be present.

The only point on the line segment is itself.

That line segment will be half as long as the third side.

The last two properties totally order the points making up a line segment.

A 1-dimensional face is called an edge, and consists of a line segment.