Explain why you need to prove 2 triangles congruent before you can prove the parts of the triangles congruent.
can you put it in my words
Before we can prove that specific parts of two triangles are congruent, we first need to prove that the two triangles as a whole are congruent. This is because the congruence of the entire triangles guarantees that all corresponding parts of the triangles will also be congruent.
If we were to assume that only certain parts of the triangles are congruent without proving the triangles congruent first, we might encounter situations where those parts could belong to non-congruent triangles. Therefore, it is necessary to establish the congruence of the entire triangles before we can confidently state that specific parts of them are congruent.