Directions: Identify the term/definition/postulate/law/theorem that is described in each statement. Write the answer on the
space provided.
1. A statement of the meaning of a word, term, and phrase that makes use of previously defined terms
2. If the two angles are supplementary, then their sum of measures is 180°.
3. If − 6 = 2, then = 2 + 6.
4. If two parallel lines are cut by a transversal, then the corresponding angles are congruent.
5. If two angles are vertical, then they are congruent.
16. If two parallel lines are cut by a transversal, then alternate-interior angles are congruent.
7. If − − , then + = .
8. If an angle is acute, then its measure is less than 90°.
