Subtended angle
Example of the angles subtended by an arc from two points
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In geometry, an angle subtended by an arc, line segment, or any other curve is one whose two rays pass through the endpoints of the arc for example a circle. The precise meaning varies with the context asked. For example, one may speak of the angle subtended by an arc of a circumference when the angle's vertex is the centre of the circle to which the circumference belongs. A simple theorem of plane geometry states that arcs of equal lengths subtend equal angles.
See also
External links
- 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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