Reasoning & Proofs Crossword

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Across
  1. 3. write the converse then negate.
  2. 4. In general, when two statements are both true or both false, they are _________ statements.
  3. 5. the then part of a conditional statement.
  4. 9. an unproven statement based on observations.
  5. 10. "If and only if" in shortened form.
  6. 11. a specific case for which the conjecture is false.
  7. 12. law of logic, starts with a c.
  8. 13. law of logic, starts with a d.
  9. 15. the if part of a conditional statement.
  10. 18. two lines that form a right are _________.
  11. 19. when you find a pattern in specific cases then write a conjecture.(two words)
  12. 20. a logical argument that uses deductive reasoning to show that a stement is true.
Down
  1. 1. A ________ statement is a statement that contains the phrase "if and only if"
  2. 2. a logical statement that has two parts (two words)
  3. 6. law of logic, starts with a s.
  4. 7. using facts, definitions, accepted properties, amd laws of logic to form a conjecture.(two words)
  5. 8. negate both the the hypothess and conclusion.
  6. 14. a statement that can be proven.
  7. 16. exchange the hypothesis and conclusion.
  8. 17. the oppsoite of the original statement.