# Arcs

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 The meaning of 'adjacent arcs' and how their arc lengths can be added. Math Open Reference Definition and properties of a sector - a pie-shaped part of a circle.. Math Open Reference Gives examples of problems with intercepted arc, central angle, and angles inside and outside the circle. Online Math Learning Finding the radius of an arc or segment given its height and width. Math Open Reference Difference between major and minor arcs. How they can be ambiguous. Math Open Reference Definition of arc length and formula to calculate it from the radius and central angle of the arc. Math Open Reference Shows how a central angle can intercept or 'cut off' an arc Math Open Reference Definition and properties of an arc Math Open Reference Discusses the properties of chords and inscribed angles of a circle and their geometric relationships. Includes a brief worksheet. Algebra Lab An interactive page that lets you drag the arc and it shows the minor arc measure. mathWarehouse
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