Question

ab and ba name the same ray. sometimes never always

Explanation:

Answer:

sometimes

(Note: A ray is defined by its starting point and direction. Ray \( \overrightarrow{AB} \) starts at \( A \) and goes through \( B \), while ray \( \overrightarrow{BA} \) starts at \( B \) and goes through \( A \). These are different rays unless \( A = B \), but if \( A \) and \( B \) are the same point, it's a trivial case. However, in general, they are different, but there are cases (like when \( A = B \), though that's a degenerate ray) or maybe misinterpreted, but the key is that they don't always, and don't never, so "sometimes" is correct. But as per the output rules, just the final answer "sometimes".)