Theorems 9.2 and 9.3: Perpendicular from Centre to Chord
Theorem 9.2
Statement
A straight line drawn from the centre of a circle to bisect the chord is perpendicular to the chord.
Class Activity
Are the angles equal? Yes! they are.
A straight line drawn from the centre of a circle to bisect the chord is perpendicular to the chord.
Are the angles equal? Yes! they are.