When A Ray is a part of a line and is named for its endpoints?

A ray is a part of a line that has a fixed starting point, known as the endpoint, and extends infinitely in one direction. It is typically named using its endpoint and another point on the ray, with the endpoint listed first. For example, if point A is the endpoint and point B is another point on the ray, it is denoted as ray AB. This notation indicates that it starts at A and passes through B, continuing indefinitely beyond B.