Answer:
The error is the length of a line segment cannot be negative.
Explanation:
The error is the length of a line segment cannot be negative.
The formula for finding the length of a line segment AB with endpoints A and B in one dimension is:

If we are using values 1 and 4.5 for A and B respectively, the correct calculation would be:

So, the length of line segment AB with endpoints 1 and 4.5 is 3.5 units.