Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 14 - Graph Theory - 14.1 Graphs, Paths, and Circuits - Exercise Set 14.1: 54

Answer

If the point where two of a graph's edges cross has a clearly marked dot, then it is a vertex.

Work Step by Step

On a graph, the vertices are clearly marked with dots. If the point where two of a graph's edges cross has a clearly marked dot, then it is a vertex. Otherwise, it is not a vertex.
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