Question

through any two points there is exactly one ____. (postulate 1.2a)
ray
space
line segment
line

1. through any three there is exactly one plane. (po
2. if any two points li those two points also that contains. (postulate 1.2c)
3. if two lines interse (postulate 1.2d)

ray
line
point

Explanation:

According to the basic postulates in geometry, one of the fundamental concepts is that through any two points, there is exactly one line. A ray has a starting point and extends infinitely in one direction, so two points don't define a unique ray (as the starting - point can be chosen in different ways). Space is a three - dimensional concept and not relevant here. A line segment is a part of a line between two points, but there are infinitely many line segments (with different lengths) that can be drawn between two points if we consider different starting and ending points on the line.

Answer:

line