Question

what is the difference between a postulate and a theorem?
a postulate is generally accepted without proof, but a theorem must be proven.
a postulate deals with parallel lines, but a theorem can involve segments and angle measures.
a postulate has already been proven by a mathematician, but there is no proof yet for a theorem.
a postulate must use undefined terms (such as point, line, and plane), but a theorem uses other vocabulary.

Explanation:

A postulate is a statement that is assumed to be true without proof. It serves as a starting - point for reasoning. A theorem, on the other hand, is a statement that can be proven using definitions, postulates, and previously proven theorems.

Answer:

A. A postulate is generally accepted without proof, but a theorem must be proven.