The Angle Bisector
Tool
The bisector tool is used to construct
the
bisector of an angle that is defined by three points. To define a
bisector
we first must select the three points that determine the (oriented)
angle.
In the figure below these are the points labeled 1,2, and 3.
Then,
when we click the bisector tool, the bisector of the angle will be
constructed.
Note that the orientation is important. In the angle on the left, the
angle
is swept out from point 1 clockwise around to point 3. Thus, the
bisector
in this case divides an angle greater than 180 degrees.
