What about lines that end on one side but proceed indefinitely on the other side? We call them rays. They are denoted by ..., etc. The fixed end point of a ray is called the starting point. (See fig.4.17)
With two rays we have more to learn. They can be parallel or intersecting.
Two rays may have the same starting point.
● Name the rays in the given figure.
● What is the common point of all these rays?
Answer: Rays =
‘ T ‘ is the common point of all these rays.