The left tabletop turns and slides onto the right one: same shape.
Bigger or smaller?
Shepard tables
One tabletop looks long and thin, the other nearly square. How different are they?
Not at all: the two tops are exactly the same shape and size, just turned.
Why? Your brain sees the drawings as real tables in 3D and “corrects” for the long table stretching away from you, which makes it look longer than it is drawn.
Picture: Неделина Ксения, CC BY-SA 4.0 · Wikipedia(opens in a new tab)