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Concept

Arc

An arc is any portion of the circumference of a circle.
Circle O with points A, B, C, and D in their circumference forming four different arcs
In this applet, and are four arcs of

Extra

 Another Kind of Arc

An arc can also sometimes be defined as a smooth and continuous section of a curve.

Arc of the function f(x) shown as a section of the curve f(x)
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