Construct geometric line with nested root

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    Geometric Line Root
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Discussion Overview

The discussion revolves around the construction of geometric lines representing nested square roots, specifically focusing on lengths such as sqrt(2 + sqrt(2)) and sqrt(sqrt(2)). Participants explore methods for constructing these lengths using geometric principles, starting from basic constructions like sqrt(2).

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • Some participants note that constructing sqrt(2) is straightforward using a triangle with sides of length 1.
  • There is a proposal to extend the construction of sqrt(2) to lengths like sqrt(2 + sqrt(2)) and sqrt(sqrt(2)), although the method is uncertain.
  • One participant suggests that a perpendicular line of length 1 can be added to the end of the sqrt(2) line to create new lengths, such as root(root(2) + 1).
  • Another participant challenges this approach, stating that the length derived from the perpendicular is actually sqrt(3), which does not equal root(root(2) + 1).
  • A later reply acknowledges the mistake in the previous reasoning and expresses confusion about the correctness of the proposed method.
  • One participant expresses a desire for additional viewpoints on the construction methods.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the methods for constructing the desired lengths, and multiple competing views remain regarding the geometric approaches discussed.

Contextual Notes

There are unresolved assumptions regarding the geometric constructions and the relationships between the proposed lengths. The discussion reflects uncertainty in the methods and calculations presented.

raphael3d
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well it is easy to construct sqrt(2) with a triangle with two sides of length 1.
but what about sqrt(2 + sqrt(2)) or the iteration sqrt(2 + sqrt(2 + sqrt(2))).

the question is how to construct a line with length sqrt(sqrt(2)) i guess(beginning with lines of length 1), but i am not sure.
 
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raphael3d said:
well it is easy to construct sqrt(2) with a triangle with two sides of length 1.
but what about sqrt(2 + sqrt(2)) or the iteration sqrt(2 + sqrt(2 + sqrt(2))).

the question is how to construct a line with length sqrt(sqrt(2)) i guess(beginning with lines of length 1), but i am not sure.

Just as you can construct a line of length root2 by drawing a triangle with sides 1 and 1, you can then extend the line of root2 to e.g. 5 + root2 by adding a segment of length 5 to the end, or convert it into root(root2 + 1) by drawing a perpendicular of length 1 on the end of the root2 line and creating a new hypotentuse.
 
a prependicular of length 1 on the end of the root2 line means root((root2)^2 + 1^2) = root3 which is not equal to root(root2 +1)
 
raphael3d said:
a prependicular of length 1 on the end of the root2 line means root((root2)^2 + 1^2) = root3 which is not equal to root(root2 +1)

Ah yes, my bad. I thought your way was right, but somehow managed to convince myself it was wrong :(
 
nevermind :)
but you gave me some new ways to think about this...
maybe there are some other viewpoints?
 

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