1.

Draw a circle radius of 4cm from a point 6cm away from its canter construct a pair of tengents to the circle and measure their legnth

Answer»

Steps of construction:

1) Draw a circle of radius 4cm with CENTRE O

2) TAKE any point P on the circle and draw a chord PQ of length 6cm.

3)From P cut the line PQ at 3cm (mid-point).

4) Join O and the midpoint and extend this line till it intercepts the circle at R.

5) OR is the radius perpendicular to chord PQ.

6)Draw perpendicular lines to PQ at P and Q and to OR at R.

7) The perpendicular lines drawn at P, Q and R are the REQUIRED tangents.

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