Where does the vertex of an angle lie?

Options

A. In its interior
B. In its exterior
C. On the angle
D. None of these

Answer

To determine where the vertex of an angle lies, we can break down the explanation step by step.

### Step-by-Step Solution:

1. **Understanding an Angle**: An angle is formed by two rays (or edges) that meet at a common point. This common point is known as the vertex of the angle.

2. **Identifying the Components**: Let's denote the two rays as OA and OB. Here, O is the vertex of the angle formed by the rays OA and OB.

3. **Position of the Vertex**: The vertex is the point where the two rays meet. It is not located outside the angle or along the rays but is specifically at the intersection point of the two rays.

4. **Conclusion**: Therefore, the vertex of an angle lies at the point where the two edges (or rays) meet, which is the common point of the angle.

### Final Answer:
The vertex of an angle lies at the point where the two rays (or edges) meet.

---