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Schroeder Stairs

Schroeder Stairs

Is the front of the staircase red or yellow? The Schroeder Stairs, also called Schouten’s Staircase, are an ambiguous figure that depicts two different staircases at the same time: one going up from right to left, the other turned upside-down. The Schroeder Stairs appear in M.C. Escher‘s works “Relativity” and “Convex and Concave”.

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