| A | B |
|---|
| Distribution of All A is B | Distributed, Undistributed |
| Distribution of No A is B | Distributed, Distributed |
| Distribution of Some A is B | Undistributed, Undistributed |
| Distribution of Some A is not B | Undistributed, Distributed |
| Figure 1 | the middle term is the subject of the major and the predicate of the minor |
| Figure 2 | the middle term is the predicate of both the major and minor term |
| Figure 3 | the middle term is the subject of both the major and minor terms |
| major term | the most unversak term and the predicate of the conclusion |
| minor term | the least universal term and the subject of the conclusion |
| middle term | intermediate in universality and connects the major and minor terms |
| mood | the types of propositions in a syllogism |
| illicit term | a term that is distributed in the conclusion of a syllogism, but not in the premises |
| Rule 1 for Evaluating Syllogisms | there is no conclusion from two negative premises |
| Rule 2 for Evaluating Syllogisms | the middle term must be distributed at least once |
| Rule 3 for Evaluating Syllogisms | the conclusion must follow the weakest premise(particular-->particular, negative-->negative) |
| Rule 4 for Evaluating Syllogisms | any term distributed in the conclusion must be distributed in the premise |
