What is the easiest way of ensuring that others can access a presentation that a user has created and make changes to it, while also ensuring that those changes are tracked and coauthoring can occur? Save to removable media.
Email the file.
Store on OneDrive and share.
Make a second copy of the file.

The pieces of a line between nodes are called segments of the line.

Explanation:

The answer is segment because it means a piece of something and a segment of a line refers to the part of the line that is between two points that are the nodes. Also, there are open line segments that don't include the points, half-open line segments that include one of the points and closed line segments that include the two points.