Let’s Draw and describe the locus in each of the following cases:(a) Draw and describe the locus of points at a distance of $4 cm$ from a fixed line.(b) Draw and describe the locus of points inside a circle and equidistant from two fixed points on the circle.

The locus of points at a distance of $4 cm$ from a fixed line segment QS are lines R and P which are parallel to the QS.

The locus of points inside a circle are equidistant from fixed points on the circle will be the diameter of the circle which is the perpendicular bisector of the line joining the tow fixed points on the circle.