Chapter 2

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Across
  1. 3. The first reason in every proof
  2. 4. The title of the right-hand column of a proof.
  3. 8. The type of proof we have been doing in class.
  4. 11. If B is the ___ of AC, then AB = BC.
  5. 13. The property that states if 4x + 5 = 1, then 4x = -4.
  6. 15. The part following "then" in a conditional statement.
  7. 16. A type of angle whose measure is 90 degrees.
  8. 18. The sum of 2 angles is 180 degrees.
  9. 19. Something that can be proven.
  10. 20. A statement that combines a conditional statement and its converse. It can only be written when the conditional and converse are both true.
  11. 21. The title of the left-hand column of a proof.
  12. 23. The sum of 2 angles is 90 degrees.
  13. 25. The property that states if 10x = 120, then x = 12.
  14. 26. Switching and negating the hypothesis and conclusion.
  15. 28. Another word for an if-then statement.
  16. 29. Interchanging the hypothesis and conclusion.
  17. 30. The symbol ~ is used to ___ a statement.
  18. 32. The property that states A = A
Down
  1. 1. When using symbols, the arrow in p -> q is read as ___.
  2. 2. Vertical angles are always ___.
  3. 5. The property that states if 5 = x, then x = 5
  4. 6. The property that states if x = 5 and 5 = y then x = y.
  5. 7. Iff stands for __ __ __ __.
  6. 9. Negating the hypothesis and conclusion.
  7. 10. The property that states 15 = 3(x + 2), then 15 = 3x + 6.
  8. 12. The part following "if" in a conditional statement.
  9. 14. Something we assume to be true.
  10. 17. The property that states if x/3 = 15, then x = 45.
  11. 22. The property that states if 4x + 5 - 2x = 12, then 2x + 5 = 12.
  12. 24. The property that states if 2x - 3 = 13, then 2x = 16.
  13. 27. A reasonable conclusion; can be true or false.
  14. 31. If B is ___ A & C, then AB + BC = AC.