How does an indirect proof differ from a regular proof?

Regular proof is all about known facts that is for e. g X must be true, while in indirect proof you assume X is true

Answer and Step-by-step explanation:

Regular proof is a method of proving the statement directly.

In this method, we just proved it by using direct formula or theorem.

whereas,

Indirect proof is a way of proving by contradiction.

In this method we assume first that the given statement is false, then it is proved correct by contradiction.