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**Dave Richeson**| April 27, 2011## A pyramidologist’s value for pi

Posted in Math, Puzzle | Tags: numerology, pi, Pyramid of Giza

A blog about math, puzzles, teaching, and academic technology

Posted by: **Dave Richeson** | April 27, 2011
## A pyramidologist’s value for pi

Posted in Math, Puzzle | Tags: numerology, pi, Pyramid of Giza

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Interesting post! Also, I enjoy reading this blog a lot!

About the pi approximation at the end, I did a little research on it and here is what I’ve found:

The last equation can be written as pi = 4*sqrt(phi-1) , which can also be written as 4/pi = sqrt(phi)

According to Wikipedia, this relation is coincidental:

http://en.wikipedia.org/wiki/Golden_ratio#Mathematical_pyramids_and_triangles

By:

Wei Daion April 27, 2011at 11:41 pm

Thanks! When I saw the square root of 5 and the 2’s I wondered if there was a golden ratio connection. I’m sure the pyramidologists love that!

By:

Dave Richesonon April 28, 2011at 7:53 am

However,

Please refer to :

http://www.stefanides.gr/Html/gmr.htm

http://www.stefanides.gr/pdf/BOOK%20_GRSOGF.pdf

http://www.stefanides.gr/html/Root_Geometries.htm

http://www.stefanides.gr/html/All_triangles_derive.htm

Regards,

Panagiotis Stefanides

By:

Panagiotis Stefanideson February 6, 2012at 9:22 am

show that the architects were using the value 3.143 for pi.is it more likely that they were “using the value 3.143″, or that they

were using “2 wheel diameters tall, and one wheel rotation across” and

the deviation is due to imprecise construction techniques?

By:

jeffon June 9, 2011at 2:47 pm

From my calculations I believe this is indeed the true value for pi.

Panagiotis Stefanides demonstrates two examples of this this quite clearly at his website:

http://www.stefanides.gr/

By:

arunskion October 3, 2011at 4:32 am

Dear Arunski I thank you.

Panagiotis Stefanides.

http://www.stefanides.gr/Html/GOLDEN_ROOT_SYMMETRIES.htm

http://www.stefanides.gr

By:

PANAGIOTIS STEFANIDESon November 28, 2011at 6:33 am