How many tangents can a circle have?

Fill in the blanks :

(i) A tangent to a circle intersects it in …………… point (s).

(ii) A line intersecting a circle in two points is called a ……………

(iii) A circle can have …………… parallel tangents at the most.

(iv) The common point of a tangent to a circle and the circle is called ……………

Draw a circle and two lines parallel to a given line such that one is a tangent and the other, a secant to the circle.

From a point Q, the length of the tangent to a circle is 24 cm and the distance of Q from the centre is 25 cm. The radius of the circle is

1. 7 cm

2. 12 cm

3. 15 cm

4. 24.5 cm