Krishna
0

METHOD 1:

Step 1: Measure the angles divided by the line segment at the vertex  

          NOTE: An angle bisector is a line or ray that divides an angle into two

          congruent angles.


Step 2: Conclude that the line segment is angle bisector if the line segments divides the angle into to equal parts.


METHOD 2:

Step 3: Use the angle bisector theorem.

            NOTE:  An angle bisector of an angle of a triangle divides the opposite

                side in two segments that are proportional to the other two sides of the

                triangle.


Step 4: Conclude that the line segment is angle bisector if it satisfies the proportion