Geometry

The correct answer is D. ∠ZYX.

 

1. Recall the rules for naming an angle:

An angle can be named with a single - letter when there is only one angle at that vertex. When using three - letter notation, the vertex of the angle is the middle letter.

 

For the angle at vertex , the two rays that form the angle start from  and pass through  and .

 

2. Analyze each option:

A: The vertex of this angle is , not , so it is not another name for .

B: The vertex of this angle is , not , so it is incorrect.

C: The vertex of this angle is