Shape of Space has one interpretation of what Flatlanders would look like. But this is just one possible drawing of some Flatlanders. Flatlanders have found their way into lots of books, like An Episode of Flatland, Sphereland, Planiverse, and Flatland. In Flatland, the main character is a square who gets sent to prison after his experiences with three dimensions. He has difficulty imagining three dimensions until an encounter with Lineland, a one-dimensional world whose inhabitants are lines.
Next, explore life in Flatland with these puzzles!