Verified answer

Step-by-step explanation:

a. A line is a straight path that extends infinitely in both directions. It is one-dimensional and has no endpoints.

b. A point is a specific location in space that has no size, shape, or dimension. It is often represented as a dot.

c. A line segment is a part of a line that is bounded by two endpoints. It has a measurable length and can be straight or curved.

d. A ray is a part of a line that starts at a specific point (the endpoint) and extends infinitely in one direction. It has a measurable length but no endpoint in the other direction.