Of the following, which are regular polygons? Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 O Figures 3, 4 and 5 O Figures 2, 3 and 6 O Figures 1, 2 and 6 O Figures 2, 4 and 6 Figures 1, 2, 4 and 6