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19-08-2016
Mathematics

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a square rotated about its center by 360° maps on to itself at (1, 2, 3, or 4) different angles of rotation.

a square rotated about its center by 360 maps on to itself at 1 2 3 or 4 different angles of rotation class=

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19-08-2016

A square rotated around its center maps onto itself every 90° of rotation.
If you rotate it a full 360°, then that happens 4 times.

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