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10.2 Chord Properties (Part 1 of 3)

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Note that line segment AB is perpendicular to chord DE. Move Point B along DE until AB passes through the centre of the circle. What do you notice about DB and BE?

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The Rule: The perpendicular bisector of a chord passes through the centre of the circle. The Big Picture: - perpendicular - bisector of chord - through centre of circle if two of these are true then all three are true.