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The meaning of 'adjacent arcs' and how their arc lengths can be added.

Definition and properties of a sector - a pie-shaped part of a circle..

Gives examples of problems with intercepted arc, central angle, and angles inside and outside the circle.

Discusses the properties of chords and inscribed angles of a circle and their geometric relationships. Includes a brief worksheet.

Finding the radius of an arc or segment given its height and width.

Difference between major and minor arcs. How they can be ambiguous.

Definition of arc length and formula to calculate it from the radius and central angle of the arc.

Shows how a central angle can intercept or 'cut off' an arc

Definition and properties of an arc

An interactive page that lets you drag the arc and it shows the minor arc measure.

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