books.google.co.uk - I CALL our world Flatland, not because we call it so, but to make its nature clearer to you, my happy readers, who are privileged to live in Space. Imagine a vast sheet of paper on which straight Lines, Triangles, Squares, Pentagons, Hexagons, and other figures, instead of remaining fixed in their places,...http://books.google.co.uk/books/about/Flatland.html?id=DjLseopg7ngC&q=Plane&utm_source=gb-gplus-shareFlatland
