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Web Results

en.wikipedia.org/wiki/Circle

A

www.mathopenref.com/pictorialindex.html

A pictorial index to the

www.khanacademy.org/math/geometry-home/geometry-area-perimeter/circum-area-circles/v/parts-of-a-circle

Radius, diameter, center, and circumference--all are

www.emathzone.com/tutorials/geometry/the-circle-and-parts-of-a-circle.html

www.mathsisfun.com/geometry/circle.html

www.mathplanet.com/education/geometry/circles/basic-information-about-circles

The points within the hula hoop are not

www.onlinemathlearning.com/diameter-of-circle.html

www.coolmath.com/reference/circles-geometry

Definitions and formulas for the radius

www.geogebra.org/m/t7tPFnjn

www.ixl.com/math/grade-7/parts-of-a-circle

More Info

www.mathgoodies.com

A

www.algebralab.org

Introduction: A

www.regentsprep.org

(Sectors are similar to "pizza pie slices"