Category:Definitions/Angle Bisectors

This category contains definitions related to Angle Bisectors.
Related results can be found in Category:Angle Bisectors.

Let $\angle ABC$ be an angle.

The angle bisector of $\angle ABC$ is the straight line which bisects $\angle ABC$.

In the above diagram, $BD$ is the angle bisector of $\angle ABC$.

Thus $\angle ABD \cong \angle DBC$ and $\angle ABD + \angle DBC = \angle ABC$.