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Across 4. When two vertices in a graph have at least one edge connecting them. 5. The pieces of a disconnected graph. 6. The points in a graph. 8. An edge if removed from a connected graph would leave a disconnected graph. 9. When graphs have the same number of vertices connected to each other in the same way. 11. A graph in which you can get from any vertex to any other vertex along a path. (It consists of one piece) 12. A vertex with an even number of edges attached to it. 13. A finite set of points, line segments or curves that start and end at vertices. 14. The movement along a graph that ends at a different vertex than it began.

Down 1. A vertex with an odd number of edges attached to it. 2. A graph that is not connected. 3. The number of edges at that vertex. 7. The line segments or curves in a graph. 10. An edge that starts and ends at the same vertex. 11. A path that begins and ends at the same vertex