Mathematics for IGCSE & O level - Circle Theorems (Section 2 - No. 39)
In a circle, if a chord is drawn to the circle, which of the following is correct?
The perpendicular from the centre to the chord bisects the chord.
The chord is a tangent to the circle.
The chord is a diameter to the circle.
The chord and its corresponding arc cannot be related.
Vysvetlenie
The perpendicular from the center to a chord bisects the chord. The others are not necessarily correct.