MarkokraM
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 1d comment Geometric transformations between dimensions Yes, this is part of the question. Do you have any additional information or source for this kind of "tricks" that has more information about the related geometry? As stated on question I'm looking for transformation procedures from areas to lines and back for example. But generally transformation between any 1D, 2D, 3D objects would be interesting. 2d asked Geometric transformations between dimensions Sep 10 accepted Visualizing and understanding $\sqrt{2\sqrt2-1}$ Sep 9 comment Visualizing and understanding $\sqrt{2\sqrt2-1}$ Is it possible to attach ABCDEF points to the picture to make it easier to comprehend? Sep 9 asked Visualizing and understanding $\sqrt{2\sqrt2-1}$ Sep 9 comment Geometrical representation of square of pi? Well, it could be this simple, why not... Sep 8 revised Geometrical representation of square of pi? Added more visualization and Akiva's pi squared formulas Sep 7 revised Geometrical representation of square of pi? added 12 characters in body Sep 7 revised Geometrical representation of square of pi? Added background information Sep 7 comment Geometrical representation of square of pi? Although so obvious it is now, I didn't think this as a squaring a circle problem in first place. But it seems to be so. I will add a detail of "continuos geometrical construction" to the original post to give some background information perhaps needed for better answer position. Sep 7 comment Geometrical representation of square of pi? Good point. I was thinking compass and straightedge. But neoclassical way is find as well. And answer to why pi can be shown but pi square cannot by classical means would be great. Sep 7 awarded Yearling Sep 7 asked Geometrical representation of square of pi? Aug 1 accepted Doubling sequences of the cyclic decimal parts of the fraction numbers Jul 29 comment Doubling sequences of the cyclic decimal parts of the fraction numbers Very throughout answer to the doubling and n-tupling phenomenon. I hope other people interested of the topic will be satisfied with it now. I learned a lot! I also made small corrections to few numbers there which were probably copy and paste typos. Jul 29 suggested rejected edit on Doubling sequences of the cyclic decimal parts of the fraction numbers Jul 28 comment Doubling sequences of the cyclic decimal parts of the fraction numbers Could we summarize at the end something like doubling is consequence of the n power 2 multifier on the equation? Any simole rule or notation to show when it happen? Just to conclude original question. Btw. 1/98 × 2 = 1/49 and 1/49 × 7 = 1/7. So 2×7 the beginning of the sequence is seen here as well. Jul 25 accepted Four mathematical notations for fraction $1/999$ and how to show/present they are equal Jul 25 comment Four mathematical notations for fraction $1/999$ and how to show/present they are equal Brilliant, that is more than enough for OP. I'm looking forward answer for other wider "doubling sequences" topic. At first I didn't want to mix it with the current one, but true, that is what I'm after. Jul 25 accepted How to notate all integers $\gt 1$ except products of $2, 3 , 5$?