Question

which is the definition of a ray? lines that lie in the same plane and do not intersect the set of all points in a plane that are a given distance away from a given point a part of a line that has one endpoint and extends indefinitely in one direction a part of a line that has two endpoints

Explanation:

A ray is defined as a part - of a line with one endpoint and infinite extension in one direction.

Answer:

a part of a line that has one endpoint and extends indefinitely in one direction