<span>A formal two-column proof contains the following components:
</span><span> Statement of the </span><span>original problem </span> Diagram, marked with "Given<span>" information </span>Re-statement<span> of the "Given" information in the proof </span>Complete supporting reasons<span> for each step in the proof </span><span> The </span>"Prove"<span> statement as the last statement </span>Conclusion