Definition
A ray is a part of a line that starts at one point (the endpoint) and extends forever in one direction.
Think of a ray like a sunbeam. It starts at the sun and shoots outward in one direction forever.
Examples
- A ray starts at point A and goes through point B, continuing forever.
- A flashlight beam is like a ray: it starts at the flashlight and shines outward.
- Two rays that share an endpoint form an angle.