Let us save this graph as graph 1. Press 1 and Enter . Now suppose at a later time we want to get this graph from the disk. To restore a file you click Graph and Restore . There are many interesting graphs so let us look at a few of them.
Complete graphs are graphs in which every vertex is adjacent to every other vertex.
Click Graph then Complete then Complete Graph . You will be asked how many vertices you want. You will then get the complete graph on 5 vertices which we will call K 5 for short. Try 4 vertices on the left and 3 on the right to get the graph we will call K 4,3 .