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Every graph must have
an even number of odd vertices
Graph Theory
explores virtual and physical structures.
Vertex
Point on a graph
Edge
line that connects two vertices on a graph
The size of a graph
the number of vertices in it
The degree of a vertex
the number of edges that go through the vertex.
Bridge
the only way through 2 vertices
Loop
an edge connected to the same vertex (counts as 2 degrees).
Path
how points get to each other.
Connected Graph
no isolated vertices. One component
Edge list
Listing all of the edges (hand shake principle). EX: AB, AC, AD, BC, BF, BC ,BE, DE, EE (loop), FG, FH (if two different edges connecting the same vertices, list twice).