Letters To Aletheia

The Golden Ratio In The Taijitu

ACKNOWLEDGEMENT: This was recently uncovered by John Arioni and he shared it on the CutTheKnotMath facebook page. Further discussion, proof, and many more interesting examples can be found here, on the Cut-The-Knot website. 

The Golden Ratio can be found in the following lengths in the standard Taijitu. 

The proof of the above can be seen in the diagram below. 

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