Final answer:
The length of the line segment between points A (2, 5) and B (6, 5) is 4 units, which is the difference in their x-coordinates since they lie on a horizontal line.
Step-by-step explanation:
To find the length of the line segment between points A (2, 5) and B (6, 5), you can use the distance formula or notice that since the y-coordinates are the same, A and B lie on a horizontal line, and the length of the line segment is simply the difference in their x-coordinates.
The length of the line segment between A and B is:
Length = x2 - x1
Length = 6 - 2
Length = 4 units
Therefore, the length of the line segment is 4 units.