Understanding Rays in Geometry
A ray is a fundamental concept in geometry that helps us understand the properties of lines and points. When discussing whether a ray has two endpoints, it's essential to clarify what a ray is.

Definition of a Ray
- A ray is a part of a line that starts at a specific point and extends infinitely in one direction.
- It has one endpoint, known as the starting point, which is where the ray begins.
- The other side of the ray continues without end, meaning it does not have a second endpoint.

Characteristics of a Ray
- **One Endpoint**: A ray has only one endpoint.
- **Infinite Length**: The length of a ray is infinite in one direction, as it does not terminate.
- **Representation**: A ray can be represented with a symbol, often denoted as "→". For example, ray PQ starts at point P and extends infinitely through point Q.

Conclusion
In summary, the statement "ray PQ has 2 endpoints" is **false**. A ray only possesses one endpoint and extends infinitely in the opposite direction. Understanding this helps clarify the distinction between rays and other geometric figures like line segments, which do have two endpoints.
By grasping these fundamental concepts, students can build a strong foundation in geometry.