The Angle Dividing Segment tool allows you to create a segment that divides an angle that you define by either 1⁄2, 1⁄3, 1⁄4, 1⁄5, 1⁄6,1⁄7, 1⁄8, 1⁄9,1⁄10, 1⁄11, or 1⁄12. You create the angle using the mark button
by marking first one side endpoint of the angle, then the vertex of the angle, and finally the second side endpoint. The line segment will be drawn from the vertex of the angle along a dividing angle equal to the fraction that you selected. Note that the segment will be drawn closest to the first defined side of the angle. If the segment isn’t drawn of the side of the angle you want, then define the angle in the opposite direction, that is, switch the endpoints of the angle when you’re selecting it. Here’s an example of Angle Dividing Segment construction: