The degree of a vertex in a graph is the number of edges incident to it; an isolated vertex is a vertex with degree zero; that is, a vertex that is not an endpoint of any edge.
An isolated vertex is a vertex with degree zero; that is, a vertex that is not an endpoint of any edge. The degree of a vertex in a graph is the number of edges incident to it.
The degree of a vertex in a graph is the number of edges incident to it. An isolated vertex is a vertex with degree zero; that is, a vertex that is not an endpoint of any edge.
The degree of a vertex in a graph is the number of edges incident to it. An isolated vertex is a vertex with degree zero; that is, a vertex that is not an endpoint of any edge.