ANSWERS A-25 This figure contains the answers to Exercises 17 and 18. 17. 18. B A C C9 A9 B9 A9 C9 B9 This figure contains the answers to Exercises 19 and 20. D9 C9 B9 A9 A9 C9 D9 D A B C B9 19. 20. This figure contains the answers to Exercises 21 and 22. A B C 22. 21. D E A9 B9 C9 D9 E9 A9 B9 C9 D9 E9 C A B G 23. F D E H C9 A9 B9 G9 F9 D9 E9 H9 C A B G 24. F D E H C9 A9 B9 G9 F9 D9 E9 H9 This figure contains the answers to Exercises 25 and 26. C9 A9 B9 25. 26. D9 C A B D C9 A9 B9 D P 9 This figure contains the answers to Exercises 27 and 28. C9 A9 B9 27. 28. C A B C9 A9 B9 P This figure contains the answers to Exercises 29 and 30. D C B D9 A B9 C9 B9 C9 D9 A9 A9 29. 30. P This figure contains the answers to Exercises 31 and 32. C9 D9 B9 C9 P A B B9 A9 D C D9 A9 32. 31.
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