1. Draw the following graphs, given here by their vertices and edges. (80 V1 = {(1, 5:0}: E1 = {{a, b}: {0: 5}: {0'10\" (b) V2 2 {(1, (3,0, d}, E2 = {{a, b}, {13,0}, {0,d}, {d,a}, {a, c}, {b, d}} (C) V3 = {61: 5:0: d: 6: f}: E3 = {{a, b}: {6: d}: {6: f}} (d) V4 = {ca he, at e, f}, E4 = Head}, {on e}, {er f}: {2), d}, {6, 6}, {bu f}: {Ca d}: {Ca 6}: {Ca f}}