Snowflakes are the perfect example of rotational symmetry in nature, normally in hexagonal shape. These paper snowflakes have four to eight repetitions of pattern, depending on the way the paper was folded before it was cut.
<a href="//commons.wikimedia.org/wiki/User:Annatsach" title="User:Annatsach">Annatsach</a>
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<span class="int-own-work" lang="en">Own work</span>