If we join any two points on a circle by a line segment, we obtain  of the circle.

Fill in the blanks:

All radii of a circle are _____.

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

The total number of diameters of a circle is _____

Fill in the blanks:

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 _____

Fill in the blanks:

Concentric circles are circles having _____

Every circle has a centre.