Answer: see below
Explanation:
Graph the points and rotate the graph as follows:
- 90° = 1 turn left
- 180° = 2 turns left (or right)
- 270° = 3 turns left (or 1 right)
or use the following formulas:
-  90°: (x, y) → (-y, x)
- 180°: (x, y) → (-x, -y)
- 270°: (x, y) → (y, -x)
1) 180°: (x, y) → (-x, -y)
 D: (1, 4) → (-1, -4)
 E: (7, 6) → (-7, -6)
 F: (8, 3) → (-8, -3)
 G: (2, 1) → (-2, -1)
2) 270°: (x, y) → (y, -x)
 L: (1, 6) → (6, -1)
 M: (8, 7) → (7, -8)
 N: (5, 2) → (2, -5)
3) 90°: (x, y) → (-y, x)
 Q: (2, 6) → (-6, 2)
 R: (5, 7) → (-7, 5)
 S: (7, 3) → (-3, 7)
 T: (1, 1) → (-1, 1)
4) 180°: (x, y) → (-x, -y)
 D: (3, 0) → (-3, 0)
 E: (6, 1) → (-6, -1)
 F: (7, -4) → (-7, 4)
 G: (1, -6) → (-1, 6)