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October 21, 2014

October 21, 2014

Posted by **mary** on Sunday, April 10, 2011 at 11:48am.

So far I each side of pentagon is 10. How do I find the radius of the circle? Is this the correct direction to go?

- Geometry -
**bobpursley**, Sunday, April 10, 2011 at 11:51amAhh the golden ratio, and now you will know why followers of Pythagoras used the pentagon as a secret symbol: it harbors secret numbers.

http://www.treenshop.com/Treenshop/ArticlesPages/FiguresOfInterest_Article/The%20Regular%20Pentagon.htm

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