Geometry

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Across
  1. 3. When a
  2. 4. When the conclusion and hypothesis both render invalid
  3. 6. When r
  4. 9. When b
  5. 10. When q
  6. 14. When d
  7. 16. When e
  8. 18. When k
  9. 19. When g
  10. 20. When p
Down
  1. 1. When the hypothesis is reversed
  2. 2. When n
  3. 5. When m
  4. 7. When c
  5. 8. When f
  6. 9. When j
  7. 11. When i
  8. 12. When s
  9. 13. When l
  10. 15. When o
  11. 17. When h