Question

Which of the following has a definite length?

• A. A line
• B. A line segment
• C. A ray
• D. None of these

Answer 1

The correct option is B

A line segment

Determine the correct option.

A line is a geometric figure that moves endlessly in two opposite directions.

A ray has one endpoint and moves endlessly in its opposite directions.

A line segment has two stationary endpoints.

So, the length of the line can be determined, and hence it is definite.

Hence, the correct option is $\left(\mathrm{b}\right)$.