Perpendicular Bisectors & Midpoints
Students carefully examine the figure shown and verify if the midpoint of a line segment can be related to perpendicular bisectors.
 How can you verify that point C is a midpoint of line segment AB?  Is line segment DC perpendicular to line segment AB? How did you know?  How are slopes of perpendicular lines related?  Is line segment DC a perpendicular bisector? Explain your answer.