How do you tell when a proof is complete?
Scroll over the rules below to see where in the proof each one applies.
  1. The conclusion must be the last line of the proof, on the main proof line
  2. Every statement must be numbered sequentially
  3. Every line below the original premises must have a justification
  4. Every justification must work, and must cite the correct line numbers
  5. No justification can use line numbers from a statement below it


Completed Proof