Sue Trembirth Square/circle
Thanks Sue Trembirth for bringing my attention to this figure…
… it has many properties that interest me. Mathematics has never been my strong point, does anyone know if it has a name?
patternsthatconnect
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Not quite sure as to what sort of maths you’re referring to, but I know this is an example of graphing (and to some extent, geometry).
Hope that helps,
Josh Young
September 3, 2012 at 8:50 am
Hi Andy, no idea on the name (#), but here is something similar I made using a timber frame, steel hooks and bungee cord. Although at the time I was exploring the alphabet.
stringing words
Not sure if typing html will work here, so here is the plain link just in-case:
http://www.concepts.codedimages.com/search/label/stringing%20words
By the way I am thoroughly enjoying your explorations.
# squarcle or circuare maybe, although I have used circuare for something entirely different
Dave (aka revad)
September 3, 2012 at 9:03 am
I don’t know of a name specific for this figure, but I believe the term that best describes this sort of creating a curve by drawing the straight lines bounding it would be an “evolute”. The field it comes up in is called differential geometry, although going straight to a geometry expert would probably suffice to get more information. (I’m afraid I don’t know the field well enough to offer useful information about it.)
Joseph Nebus
September 3, 2012 at 10:40 pm
Thanks all for commenting. Dave the link works both ways and is much appreciated. You also show how to do it right by the way, a continuous line seems better than the discontinuous one I used here. “Squarcle” sounds great and “evolute” also Joseph, I like that it names the process rather than the figure.
Andy Parkinson
September 5, 2012 at 6:57 am
I’ve also seen ‘squarcle’ used to describe a shape made often used by lb Geertsen. Geertsen’s shape is somewhat different being a circle wit on quarter replaced by two sides of a square. His art can be seen at: http://www.ibgeertsen.dk/Index_Se_V%C3%A6rker.htm
Dave (aka revad)
September 5, 2012 at 10:43 am
Doh ‘a shape often used’ ;O)
Dave (aka revad)
September 5, 2012 at 10:44 am
Sorry spelling errors are I find a consequence of the iPad soft keyboard.
Dave (aka revad)
September 5, 2012 at 10:45 am