Why are there 5 sides to the Pentagon?

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Tags

1. #objections
2. #other
3. #south
4. #divisions
5. #shape
6. #almost
7. #national
8. #bound
9. #moved
10. #tract
11. #asymmetrical
12. #cemetery
13. #building
14. #conform
15. #location
16. #selected
17. #pentagon
18. #block
19. #would
20. #views
21. #sides
22. #designed
23. #arlington
24. #roads