Answer with explanation:
1)
Axiom--- In mathematics an statement also known as a postulate is a statement that is taken to be trivially true. It serve as a premise for further reasoning or some arguments.
2)
Theorem-- It is a proposition that is not considered as self evident it require a chain of reasoning or we may say it need to proved by the help of certain other statements.
3)
Proof-- A proof is a sufficient argument or evidence for a proposition to be true.
