| __ | 1. | Biconditional Statement | | A. | Unproven statement based on observations. |
| __ | 2. | Conditional Statement | | B. | Based on facts, definitions, properties, laws of logic |
| __ | 3. | Conjecture | | C. | Proves a statement is false |
| __ | 4. | Contrapositive | | D. | "if" part of conditional statement |
| __ | 5. | Converse | | E. | Opposite of original statement |
| __ | 6. | Counterexample | | F. | Not the Conclusion then Not the Hypothesis |
| __ | 7. | Deductive Reasoning | | G. | Hypothesis then conclusion |
| __ | 8. | Hypothesis | | H. | Conclusion then Hypothesis |
| __ | 9. | Inverse | | I. | Not the hypothesis then not the conclusion |
| __ | 10. | Negation | | J. | Containe "if and only if" |