Concentric

Pronunciation: /kənˈsɛn trɪk/ ?

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Manipulative 1: Concentric Circles.

Two geometric shapes are concentric if they have the same center.[1] Concentric circles have a common center and different radii.[3] Eccentric figures (excentric in British English) do not have the same center. Click on the green points in manipulatives 1 and 2 and drag them to change the manipulatives.

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Manipulative 2: Concentric Squares.

References

  1. concentric. http://wordnet.princeton.edu/. WordNet. Princeton University. (Accessed: 2011-01-08). http://wordnetweb.princeton.edu/perl/webwn?s=concentric&sub=Search+WordNet&o2=&o0=1&o7=&o5=&o1=1&o6=&o4=&o3=&h=.
  2. eccentric. http://wordnet.princeton.edu/. WordNet. Princeton University. (Accessed: 2011-01-08). http://wordnetweb.princeton.edu/perl/webwn?s=concentric&sub=Search+WordNet&o2=&o0=1&o7=&o5=&o1=1&o6=&o4=&o3=&h=.
  3. Stöcker, K. H.. The Elements of Constructive Geometry, Inductively Presented, pp 44-45. Translated from German by Noetling, William A.M, C.E.. Silver, Burdett & Company, 1897. (Accessed: 2009-12-27). http://www.archive.org/stream/elementsofconstr00noetrich#page/44/mode/1up/search/concentric.
  4. Phillips, Andrew W.; and Fischer, Irving. Elements of Geometry, pg 74. Phillips-Loomis Mathematical Series. Harper & Brothers Publishers, 1899. (Accessed: 2010-01-18). http://www.archive.org/stream/elementsgeometr02fishgoog#page/n86/mode/1up/search/concentric.

Cite this article as:


Concentric. 2010-01-18. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/c/concentric.html.

Translations

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Revision History


2010-01-18: Corrected caption for manipulative 2 (McAdams, David.)
2009-12-27: Added "References" (McAdams, David.)
2008-07-08: Changed Sketchpad application to GeoGebra (McAdams, David.)
2008-05-18: Initial version (McAdams, David.)

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