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|Look up subtend in Wiktionary, the free dictionary.|
In geometry, an angle subtended by an arc, line segment, or any other section of a curve is one whose two rays pass through the endpoints of the arc (or other object). The precise meaning varies with context. For example, one may speak of the angle subtended by an arc of a circle when the angle's vertex is the centre of the circle.
- Definition of subtended angle, mathisfun.com, with interactive applet
- How an object subtends an angle, Math Open Reference, with interactive applet
- Angle definition pages, Math Open Reference, with interactive applets that are also useful in a classroom setting.
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