Penteract - a five dimensional cube

Let's denote points by two numbers (x,y) to describe points in two dimensions. The points where both of these numbers (called coordinates) are, for example, between 0 and 1 describe a two dimensional "cube" - a square. Its corners are (0,0), (0,1), (1,1), and (1,0). All points in three dimensions with all three coordinates between 0 and 1 describe a cube. In 4D it's called a tesseract. And in 5D - a penteract.

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