
 Perpendicular Bisectors (Site not responding. Last check: 20071021) 
  The perpendicular bisector theorem states that if a point is on the perpendicular bisector of a segment, then it is equidistant from the endpoints of the segment. 
  In this illustration, segment AB is bisected by line CD intersecting it at its midpoint E. According to the theorem, point F, which is on the perpendicular bisector, should be equidistant to points A and B at all times. 
  The perpendicular bisector converse theorem, on the other hand, states that if a point is equidistant from the endpoints of a segment, then the point lies on the perpendicular bisector of the segment. 
 marian.creighton.edu /~dkath/PerpendicularBisector.htm (193 words) 
