Description: Area = pi x r² C = pi x d where pi=3.1415... Center - point inside the circle. All points on the circle are equidistant in the same distance from the center point.Radius - the distance from the center to any point on the circle. It is half the diameter.Chord - a line segment linking any two points on a circle.Diameter - the distance across the circle. It is twice the radius. Circumference - the circumference is the distance around the circle.Area - the region enclosed by the circle.Two circles disjoint tangent intersecting outside inside overlapping Two circles which measures overlap to are called concentric Author(s): Mikołaj Dobrzyński Sources: -http://en.wikipedia.org/wiki/Circle -http://www.mathopenref.com/circle.html -notebook for math :-) |

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