Final answer:
Corrine's definition of a ray as a line with one endpoint is incomplete. A ray extends infinitely in one direction from its starting point and is a key concept in both mathematics and physics.
Step-by-step explanation:
Corrine is partially correct in her definition of a ray. A ray does indeed start at a specific point, but the key aspect she is missing is that a ray extends infinitely in one direction from that point. In mathematics, a ray is represented as a straight line with one endpoint (the starting point), and it continues without end in the other direction. This concept is similar to how light travels in straight lines and can be modeled by rays in physics.