Flatland

Flatland is a world that is two-dimensional. That means it has width and length, but no height. It is like a piece of paper - everything on it is flat and only has two dimensions. Imagine you are living on the flat paper. You can move around by walking, but when you look up or down, all you see is the same flat paper. Anything living in Flatland is not tall, wide, or deep - it's just flat.