Select whether the following statement is always true, sometimes true, or never true. in the plan of a proof, you should use the plan that was used on previous theorems.
always
sometimes
mever are the choices

This statement is sometimes true.

Step-by-step explanation:

In the plan of a proof, you should Sometimes use the plan that was used on previous theorems.

We can sometimes take in consideration, the previous plans in theorems and proofs to derive new one. If we always keep using the plan that was used in previous theorems, then new things cannot be invented.

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