Since you didn't include the statements in your question there is no way for us to know
Logically invalid statements.
no
Mathematical logic.
Postulates Definitions Corollaries
Yes, of course.
conclusion
Theorems, definitions, corollaries, and postulates
Logically invalid statements.
Guess Conjecture
No
Mathematical logic.
no
The corollaries types of statement is what is used to explain the steps of a proof.
The corollaries types of statement is what is used to explain the steps of a proof.
Postulates Definitions Corollaries
Yes, of course.
theoremPostulates(apex)postulatesdefinitioncollaries