Mathematics for IGCSE & O level - Circle Theorems (Section 2 - No. 4)
In a circle, a chord is drawn. A line is drawn from the center of the circle perpendicular to the chord. What can be said about the chord and the line?
The line bisects the chord and forms a right angle.
The line is parallel to the chord.
The line is longer than the chord.
The line is equal in length to the chord.
Explication
The perpendicular from the center to a chord bisects the chord, forming two equal segments at a right angle.