Question

Draw a circle of radius 4.2 cm, take any point M on it. Draw tangent to the circle from point M.

Answer 1

Steps of construction:

1. With center O, draw a circle of radius 4.2 cm.
2. Take any point M on the circle and draw ray OM.
3. Draw line `l` ⊥ ray OM at point M. 
   Line `l` is the required tangent to the circle at point M.