Michele,

More little flea bites at the bookstore:
"White fleas? Tsunga penetrans? We want brown fleas!"
So, the Ad Infinitum design was improved yet again
(my image editor thinks that copper is close enough to brown).

To recap recent comments and finalize closure:
Re:
http://www.aitnaru.org/images/Pi_Corral.pdf (see Ad Infinitum design*)
"Great fleas have little fleas upon their backs to bite 'em,
And little fleas have lesser fleas, and so ad infinitum.
And the great fleas themselves, in turn, have greater fleas to go on,
While these again have greater still, and greater still, and so on."
- Augustus De Morgan (1806 - 1871)
A little humor from the past to complement the visually obvious: a certain scalene triangle squares the circle "and greater still, and so on."
Incidentally, De Morgan coined the term "morbus cyclometricus" to describe the futile efforts of squarers of the circles. But "sanitas cyclometricus" is now counterproposed to describe the efforts of squarers of the circles who include this unique scalene triangle in their exploratory geometry.

The PDF document briefly reviews the trigonometry which associates Pi with a cosine angle, providing the inspiration for most of the designs in this document (a non-mathematician's "out of the box", "pattern appreciation", CAD-assisted study of this Greek geometry challenge from antiquity).
* The content of the PDF file is not copyrighted and is intended to be shared freely to promote the continuing study of Pi and to honor all geometers who have truly labored over the centuries to solve the problem of "squaring the circle".
Rod ...

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