Question

18 points a and b are on a line. what is the best definition of line segment ab? a points a and b, and points in between them b points a and b, and the line containing them c points a and b, and all points on the line in between them d points a and b, all points on one side of a

Explanation:

A line segment is defined by two endpoints (here, points A and B) and all the points on the line that lie between those two endpoints. Option A is too vague as "points in between" is not as precise as "all points on the line in between". Option B includes the entire line (which is infinite in both directions), not just the segment. Option D refers to points on one side of A, which is not a segment between A and B.

Answer:

C. Points A and B, and all points on the line in between them