10.1 Chords of a Circle[br]Perpendicular bisector of a chord of a circle passes through the centre of a circle.[br](abr. perpendicular bisector of chord)

1. Click and move the points A, B and D, E to change the length and position of the two chords.[br]2. Observe the lines perpendicular to the chords, that bisect the chords.[br]3. What do you realize about the intersection point of these perpendiculars?