Perpendicular Bisector of Chords

Below shows a circle.
The points A, B and X are points on the circumference of the circle.

You can:

• shift the point X to change the size of the circle
• shift the points A and B to change the position and length of the chord AB

Instructions:

1. Adjust the position and length of the chord AB.
2. Check all boxes.
3. Observe the position of the centre of circle.
4. Repeat steps 1 ~ 3 for other positions and lengths of the chord AB.

Note: To see the animation, check all boxes, then click on the "play" button (at bottom left).



Download the GeoGebra file: http://www.geogebratube.org/material/download/format/file/id/41105

Download the Worksheet: http://db.tt/jJ5lR6ai