Geometry

The correct answer is D. , .

 

1. Recall the definition of an angle formed by rays:

An angle is composed of two rays that share a common endpoint, which is the vertex of the angle. For , the vertex is point .

The rays forming the angle should start from the vertex .

One ray starts from  and passes through , denoted as , and the other ray starts from  and passes through , denoted as .

 

2. Analyze each option:

A: The ray  starts from  and goes towards , not from the vertex  of , so this option is incorrect.

 

B: The ray  starts from