Answer:
18. A' (0, 0)
B' (0, -4)
C' (5 ,-5)
D' (5, -1)
19. lines of symmetry:
Letter G- no lines
Letter E- horizontal through the middle line
Letter O- vertical and horizontal
Letter M- vertical through the middle
Letter T- vertical through the middle
Letter R- no lines
Letter Y- vertical through middle
20.
Figure 1- 4
Figure 2- 8
Figure 3- 5