© Nevit Dilmen [CC-BY-SA-3.0-2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/3.0)],
via Wikimedia Commons
6-fold rotational and reflectional symmetry
© Nevit Dilmen [CC-BY-SA-3.0-2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/3.0)],
via Wikimedia Commons
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