Here's the question you clicked on:
RolyPoly
<Proof without words>
How to prove the statement by the diagram above? Courtesy: http://www1.maths.leeds.ac.uk/~khouston/pdf/10ways.pdf
look and be convinced i love this book
Good point! Got it, thanks! :)
@satellite73 Is it ok to quote your words like this: "look and be convinced" ~ satellite73 ?