WOLFRAM|DEMONSTRATIONS PROJECT

The Perpendicular Bisector of a Chord

​
AR
≈
0.80
AS
≈
0.80
∠OAR
≈
90.00°
∠OAS
≈
90.00°
The perpendicular line from the center of a circle O bisects the chord SR. Conversely, the line segment through O bisecting SR is perpendicular to SR.
Drag the brown point A to change the figure.