no
Yes, of course.
Since you didn't include the statements in your question there is no way for us to know
Steps in a geometric proof do not require support
the theorems and postulates used in the proof
no
conclusion
Yes, of course.
Guess Conjecture
definition,postulate,theorem,& CorollaryDefinition, Theorem, Corollary, and PostulateA.PostulateB.DefinitionD.Algebraic property(answers for apex)a and cpostulate, theorem, and definition
Theorems, definitions, corollaries, and postulates
Yes, a theorem can be used to provide the key ideas or principles necessary to construct a proof. Theorems serve as the foundation for a mathematical argument and can guide the reasoning and structure of the proof.
Pythagorean theorem
Since you didn't include the statements in your question there is no way for us to know
triangle sum theorem
Steps in a geometric proof do not require support
The corollaries types of statement is what is used to explain the steps of a proof.