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 Everyday Examples
 Concentric:  Refers to circles that have the same center.
In this picture of a quilt, there is a larger circle surrounding a smaller one. Since these circles have the same center, they are examples of concentric circles.

Two circles with the same center have been stitched into this quilt.

Quilt #3 by Carrie Severt. Photo by Lyntha Scott Eiler, Blue Ridge Folklife Project, American Folklife Center, Library of Congress.

A dart board demonstrates examples of concentric circles. Each circle in the target has the same center - the bull's eye.

 

A dart board is made up of different sized circles around a single center.