Construction of Tangents to a Circle

Draw a circle with radius 4.2 cm. Construct tangents to the circle from a point at a distance of 7 cm from the centre.

Draw tangents to the circle with center ‘C’ and radius 3.6 cm, from a point B at a distance of 7.2 cm from the center of the circle.

Complete the following activity to draw a tangent to a circle at a point on
the circle.
                 Draw a circle of radius 2.2 cm with O as centre.

                                                ↓
                 Take any point P on the circle and draw ray OP.

                                                ↓
                 Draw a perpendicular line to the ray at point P.

                                                ↓
                         Name the perpendilcular line as l

                               l is the tangent at point P.

Draw a circle with centre P and radius 2.1 cm. Take point Q at a distance
5.2 cm from the centre. Draw tangents to the circle from point Q. Measure
and write the length of a tangent segment.

Draw a circle with centre P. Draw an arc AB of 100° measure. Draw tangents to the circle at point A and point B.

Draw a circle of diameter 6.4 cm. Take a point R at a distance equal to its diameter from the centre. Draw tangents from point R.