MATHS Fill in the blanks.

If O is the centre of a circle and two radii OA and OB are at right angles then the sector OARBO is called the ________ of the circle.

All the radii of circle are ________ .

An arc of a circle is a ________ of the circle.

Radius of a circles is ________ of its diameter.

The centre of a circle lies in its ________ .

The length of the boundary of a circle is called its ________ .

A quadrant is __________ of a circle.

The interior of a circle together with the circle is called the __________ .

A chord that passes through the centre of a circle is called a __________ of the circle.

A line segment having its end points on a circle is called a __________ of the circle.

All the radii of a circle are __________ .

A line which intersects the circle at two distinct points is called a __________ .

The mid-point of a diameter of a circle is the __________ of the circle.

Half of a circle is called a __________ .

A diameter is the __________ chord of the circle.

The perimeter of a circle is called its __________ .