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  1. Project Showcase
    The Penrose stairs, also known as the impossible staircase, is a two-dimensional depiction of a staircase in which the stairs make four 90-degree turns as they ascend or descend yet form a continuous loop. Although the staircase is conceptually impossible, it does interfere with your perception...
  2. Project Showcase
    This is a modified version of the Penrose “Impossible” Triangle which is an interesting example of how the brain can be fooled. http://www.instructables.com/id/Penrose-triangle-modified/
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