http://www.chinaz.com/design/2015/1109/467968_2.shtml
The golden ratio: 1.618
a/b=b/(a+b)
The Fibonacci series:
The perfect arc:
The round circles
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http://www.chinaz.com/design/2015/1109/467968_2.shtml
The golden ratio: 1.618
a/b=b/(a+b)
The Fibonacci series:
The perfect arc:
The round circles
相关文章：