Step 1: Recall the Angle Bisector Theorem
NOTE: The Angle Bisector Theorem states that a point is on the bisector of an angle if and only if it is in the interior of the
angle and is equidistant from the sides of the angle.
Step 2: Note down the given values
Step 3: Make sure that the given line (SU) is the bisector or not
NOTE: A point is equidistant from two lines if it is the same distance from
them. The distance between a point and a line is the length of the segment
perpendicular to the line from the point.
EXAMPLE: RU = TU = 70
Step 4: Conclude that the bisector bisects the angle into two equal parts
EXAMPLE: \angle TSU = \angle RSU = 56 \degree
