## Vertex

### In mathematics, the vertex refers to the point where two or more lines or edges meet to form an angle

In mathematics, the vertex refers to the point where two or more lines or edges meet to form an angle. It is a common term used in geometry, algebra, and graph theory.

Geometry: In geometry, a vertex is the common endpoint of two or more line segments or rays. For example, in a triangle, each of the three corners is a vertex, and in a tetrahedron, each of the four corners is a vertex. The plural of vertex is “vertices.”

Algebra: In algebra, a vertex is often associated with parabolas. A parabola is a U-shaped curve defined by a quadratic equation. The vertex of a parabola is the point where the curve reaches its minimum or maximum value, known as the maximum vertex or minimum vertex respectively. The vertex of a parabola can be determined by finding the axis of symmetry, which is a vertical line passing through the vertex.

Graph Theory: In graph theory, a vertex represents a single point or element in a graph. A graph is composed of vertices (also known as nodes) and edges, which connect pairs of vertices. For example, in a social network graph, each person can be represented by a vertex, and the connections between individuals can be represented by edges. The study of graphs involves analyzing the properties and relationships between vertices and edges.

In summary, the term “vertex” has different meanings depending on the mathematical context. It can refer to the point where lines meet in geometry, the minimum or maximum point of a parabola in algebra, or the individual elements in a graph in graph theory.

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