Mathematics for IGCSE & O level - Circle Theorems (Section 2 - No. 33)
What can you deduce about the chords which are equidistant from the centre of a circle?
The chords are of equal length.
The chords are parallel.
The chords are perpendicular to each other.
The chords are unequal in length.
解释
If chords are equidistant from the center of the circle, they must have equal length.