The lengths of the two tangents from an external point to a circle are equal.

Prove that the lengths of tangents drawn from an external point to a circle are equal.

Prove that the angle between the two tangents drawn from an external point to a circle is supplementary to the angle subtended by the line -segment joinig the point of contact at the centre.

Prove that the angle between the two tangents drawn from an external point to a circle is supplementary to the angle subtended by the line - segment joining the points of contact at the centre.

The pair of tangents AP and AQ drawn from an external point to a circle with centre O are perpendicular to each other and the length of each tangent is 4 cm. Then, the radius of the circle is ... cm.

Fill in the blanks Calculate the length of tangent from a point 15cm away from the centre of a circle of radius 9cm .

Draw a circle with the help of a bangle. Take a point outside the circle. Construct the pair of tangents from this point to the circle.

Prove that the tangent drawn at the ends of chord of a circle make equal angle with the chord.

Fill in the blanks Prove that the tangents to a circle at the end points of a diameter are parallel.

Two tangent TP and TQ are drawn to a circle with centre O from an external point T. prove that angle PTQ=2 angle OPQ.

The length of a tangent from point A at distance 5cm from the center of the circle is 4cm. Find the radius of the circle.