在数学中,旋转对称几何图形的一种性质。把一个图形围绕某一个点旋转一定度数,旋转后的图形与旋转前重合,该图形就具备旋转对称性。如果旋转180°后重合,则特别称为中心对称

Thumb
三曲腿
Thumb
五角星

参考资料

Wikiwand in your browser!

Seamless Wikipedia browsing. On steroids.

Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.

Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.