Question

which of the following names a ray? a. ray ab with arrow to the right b. segment ab c. line ab with arrows both ways d. ab

Explanation:

Step1: Recall ray notation

A ray is named with an endpoint first, followed by another point on the ray, and has a single arrowhead indicating direction.

Step2: Analyze each option

• Option A: The symbol has an arrowhead on one end (starting at A, going through B), matching ray notation ($\overrightarrow{AB}$ represents ray with endpoint A, passing through B).
• Option B: $\overline{AB}$ is a line segment (two endpoints, no arrow).
• Option C: $\overleftrightarrow{AB}$ is a line (arrows on both ends, infinite in both directions).
• Option D: "AB" is just a segment name without notation, not a ray.

Answer:

A. $\overrightarrow{AB}$ (the option with the single arrowhead starting at A and going through B)