| A | B |
| Biconditional Statement | A single statement that is equivalent to writing the conditional statement and its converse |
| Conditional Statement | An "if-then" statement |
| Converse | A statement obtained by interchanging the hypothesis and conclusion |
| Counterexample | An example which disproves a conditional statement |
| Hypothesis | The "if" part of the conditional statement |
| Complementary Angles | Two angles whose measures sum to 90 degrees |
| Supplementary Angles | Two Angles whos measures sum to 180 degrees |