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Definitions An undirected graph is connected if there is a path from every vertex to every other vertex.A directed graph with this property is called strongly connected.If a directed graph is not strongly connected,but the underlying graph(without direction to the arcs)is connected,then the graph is said to be weakly connected. A complete graph is a graph in which there is an edge between every pair of vertices.Definitions ◼ An undirected graph is connected if there is a path from every vertex to every other vertex. A directed graph with this property is called strongly connected. If a directed graph is not strongly connected, but the underlying graph (without direction to the arcs) is connected, then the graph is said to be weakly connected. ◼ A complete graph is a graph in which there is an edge between every pair of vertices
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