angle bisector

Angle Bisector

A line or ray that divides an angle in half. For polygons, an angle bisector is a line that bisects an interior angle.

Note: The angle bisectors of a triangle are concurrent and intersect at the incenter.


Angle bisector of ∠ABC
(Click on the image or here to launch an interactive java applet)


See also

Incircle, centers of a triangle

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