Let's have a look at 2 graphs which are almost the same.
The two graphs are almost the same. But there is one difference. The cities of the first graph are connected with simple lines while the cities of the second graph are connected with vectors.
There are 2 types of graphs. They are called directed and indirected. As the name suggests indirected means without directions. The first graph is indirected. If we can go from the city A to city B and we can get back from city B to city A that means that the road connecting the cities A and B is not directed. In the second graph, the arrow means that we can go from A to B but we can't get back. We can only move with the direction of an arrow.
The two graphs are almost the same. But there is one difference. The cities of the first graph are connected with simple lines while the cities of the second graph are connected with vectors.
There are 2 types of graphs. They are called directed and indirected. As the name suggests indirected means without directions. The first graph is indirected. If we can go from the city A to city B and we can get back from city B to city A that means that the road connecting the cities A and B is not directed. In the second graph, the arrow means that we can go from A to B but we can't get back. We can only move with the direction of an arrow.
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