Question

what is a direct proof

Answer 1

A direct proof is assuming your hypothesis is true, then by using definitions, axioms, theorems previously established and statements that are logically implied by earlier statements in the proof, show that you conclusion is also true.

Answer 2

Or in a nut shell, assume thing 1 is true, then by using math show it it basically equivalent to or logically shows thing 2 is true.

Answer 3

there are three types of proofs ;
a paragraph proof
a two column proof
and a flow proof