In the figure, represents a network. The number of vertices are:
3.
2.
4.
1.
The number of arcs in the network in the figure is:
6.
5.
The figure, is a network.
The number of arcs is:
The number of regions in the network in the figure is:
The transversal network in the following is:
A.
B.
D.
C.
