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Place a cent on the middle of one of your tables in Space; and leaning over it, look down upon it. It will appear a circle.
In that country, you will perceive at once that it is impossible that there should be anything of what you call a 鈥渟olid鈥?kind; but I dare say you will suppose that we could at least distinguish by look the Triangles, Squares, and other figures, moving about as i have described them. On the contrary, we could see nothing of the kind, not at least so as to distinguish one figure from another. Nothing was visible, nor could be visible, to us, except Straight Lines; and the necessity of this I will speedily demonstrate.
The same thing would happen if you were to treat just like a Triangle, or Rectangular, or any other figure cut out of pasteboard.
As soon as you look at it with your eye on the edge on the table,
But now, drawing back to the edge of the table, gradually reduce your eye (thus bringing yourself more and more into the healthiness of the habitants of Flatland), and you will find the any amount of money becoming more and more oval to your view, and eventually when you have placed your eye exactly on the edge of the table (so that you can are, as it were, actually a Flatlander) the any amount of money will then have ceased to appear oval at all, and will have become, so far as you can see, a straight line.