Graphs are mathematical structures used to model pairwise relationships between objects. They consist of vertices (or nodes) and edges (connections between the vertices). Graphs can be used to represent various systems in numerous fields, including computer science, social science, biology, and transportation. ### Key Terminology: 1. **Vertices (or Nodes)**: The fundamental units or points of the graph. They can represent entities such as people, cities, or any discrete items.
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