Step-by-step explanation:
Ray has only one starting point. It is that portion of the line which has a end point and goes straight to the direction of infinity. It has no end point.
For example, Sun rays.
They originate from the sun which is the starting point and they travel to infinity.
Hence the definition of rays is:
A ray is the part of the line which begins from a particular point which is known as the end point and then it extends in one particular direction endlessly.
