What is the name of the point where two lines intersect?

• A. Center
• B. Vertex
• C. Endpoint
• D. Midpoint

Answer: (B)

The point where two lines intersect is known as the vertex. In geometry, a vertex is a fundamental concept that refers to a specific point where two lines or line segments meet. This term is especially applicable in the context of angles, as the vertex is the point from which the two rays of an angle extend. Understanding the term "vertex" helps in distinguishing it from other geometric terms, such as the center, which refers to the middle point of a circle, and midpoint, which indicates the halfway point between two points on a line segment. The endpoint refers to the termination point of a line segment instead of where two lines cross. Thus, recognizing that the vertex represents the intersection of two lines is key to understanding this geometric concept.