Question

Draw two congruent circles of radii 3 cm, having their centres 10 cm apart. Draw a direct common tangent.

Answer 1

Draw a line $AB=10cm$

Draw two circles $C1$ and $C2$ with radius $=3cm$ and centre as $A$ and $B$ respectively.

Draw perpendiculars $PA$ at $A$ and $BQ$ at $B$.

Join $PQ$

$PQ$ is the required direct tangent.