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All radii of a circle are .

The diameters of a circle are _____ ( parallel/concurrent/perpendicular).

The total number of diameters of a circle is _____

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Every point on a circle is _____ from its centre.

A chord of a circle contains exactly _____ points of the circle.

A diameter is the longest _____

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Concentric circles are circles having _____

Every circle has a centre.

The centre of a circle is a point of the circle.