Question

which of the following cannot be used to state a postulate? definitions undefined terms theorems defined terms

Explanation:

Postulates are fundamental assumptions (axioms) in a mathematical system. Theorems are statements proven using postulates, definitions, and undefined terms. So theorems, being proven results, can't be used to state a postulate (as postulates are unproven assumptions). Definitions clarify terms, undefined terms are basic building blocks, and both can be used in stating postulates.

Answer:

theorems