When a mathematician writes qed at the end of a proof, what does this mean?

check your handy dandy dictionary.

QED

Latin: Quod Erat Demonstrandum.

what I wanted to proved, I proved.

unless if u could do my questions, if not i wouldn't want to

b

step-by-step explanation:

it have 5 sides and 5 identicle angle.the rest does not have the same property as b.

brainliest