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 Everyday Examples
 Closed Curve:  A curve that can be traced using the same starting and stopping points, and without crossing or retracing any part of the curve.


Image source: http://www.ironring.ca/ring.gif

A ring is a closed curve because it needs to stay on someone's finger.


Image source: http://www.chanslor.com/lasso.gif

A lasso is a closed curve to help keep a hold of an object or animal that it catches.