If the radius of a circle be zero, then the circle is called a point circle.

The parpendicular drawn on radius at the end point of radius of a circle will be a tangent to the circle at the end point of radius.

Any part of a circle is called an………..of the circle.

Arc of a circle a continuous piece of a circle is called an arc of the circle.

P, Q are the points on the circle. The part of the circle, PQ is called ________ of the circle.

The common point of a tangent to a circle and the circle is called the point of contact.

The radius of circle A is twice that of circle B and the radius of circle B is twice that of circle C. Their area will be in the ratio

A circle with centre '(3,4)' passes through the origin. a) What is the radius of the circle. b) If a point on the circle is '(x, y)', write the relation between 'x, y'. c) Check whether the point '(-2,1)', lies on this circle.

If the centre of some circles be the same , then they are called________circle.

The radius of circle tends to zero then it approaches a ________.

The perpendicular drawn on radius at the end point of radius of a circle will be a "______" to the circle at the end point of radius.