20) Given the graph below, write its adjacency matrix structure.
U
c
V
a
b
X
e
W
18) The table below shows a graph. Draw this graph. Which vertices have an odd degree? How many edges and vertices are in the graph? Is this a directed graph?
Vertex
Adjacent Vertices
A
(B,C,D)
B
(A,E)
C
(A,D,E)
D
(A,E)
E
(B,C,D)