## A Tessellation Featuring Three Varieties of Squares

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The first of these used the center of a square as the center of rotation. This one, by contrast, uses an intersection as the center of rotation. In each case, 45 degrees is the angle used.

I can’t think of any good reasons for geometricans not to have their own space station, and I know what we’d do there: we’d work on geometry (also known informally as “playing with shapes”).

My suggestion for this space station’s design was created with *Stella 4d*, and you may find that program (to try or guy) here: http://www.software3d.com/Stella.php.

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