Question

which is the endpoint of a ray?
point u
point t
point s
point r

Explanation:

Step1: Recall the definition of a ray

A ray has one endpoint and extends infinitely in one direction.

Step2: Analyze each point

• Point \(R\): The ray \(SR\) has endpoint \(S\), not \(R\).
• Point \(T\): The ray \(ST\) has endpoint \(S\), not \(T\).
• Point \(S\): The ray \(SR\) has endpoint \(S\) (extends infinitely towards \(R\) direction), the ray \(ST\) has endpoint \(S\) (extends infinitely towards \(T\) direction), and the ray \(SU\) has endpoint \(S\) (extends infinitely towards \(U\) direction).
• Point \(U\): The ray \(SU\) has endpoint \(S\), not \(U\).

Answer:

point \(S\)