Question: 4. (4pts) Given an undirected graph G = (V, E): V = {1, 2, 3, 4, 5, 6, 7}, E = {{1, 2), {1, 3},

4. (4pts) Given an undirected graph G = (V, E): V = {1, 2, 3, 4, 5, 6, 7}, E = {{1, 2), {1, 3}, {1, 4), {2, 3), {2, 4), {3, 4), {4, 5}, {4, 6}, (4, 7}}. (a) Give a planar embedding of G. (b) How many faces (or regions) does the graph have

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