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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,

A B,

B C,

C D,

and

D A

are four arcs of

⊙ O .

Extra

Another Kind of Arc

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

Exercises

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