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 - Page 901: 37

Answer

Vertex D, vertex G, and vertex I are adjacent to vertex F.

Work Step by Step

Two vertices are adjacent if there is an edge which connects the two vertices. There is an edge which connects vertex D and vertex F, so vertex D is adjacent to vertex F. There is an edge which connects vertex G and vertex F, so vertex G is adjacent to vertex F. There is an edge which connects vertex I and vertex F, so vertex I is adjacent to vertex F. Vertex D, vertex G, and vertex I are adjacent to vertex F.
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