Draw an angle and label it ∠XYZ. Draw YA−→− so that ∠AYX and ∠AYZ are congruent* and adjacent, but YA−→− is NOT an angle bisector.
Explain why YA−→− is not an angle bisector.
*It is required that ∠AYX and ∠AYZ are approximately congruent within one degree or less.