Hi, my name is Derek. I am a Senior at Watertown High School in Watertown, Wisconsin. My Precalc teacher offered us extra credit if we could come up with the answer to this question: "What does Q.E.D. mean?" I think it has something to do with what you put down do show that you finished a proof. If you could get back to me asap with the answer I would appreciate it. Thank you.

Q.E.D. means quod erat demonstrandum. It is a Latin expression that means "Which was to be proven."