A straight line AB is 8 cm long. Locate by construction the locus of a point which is:
(i) Equidistant from A and B.
(ii) Always 4 cm from the line AB.
(iii) Mark two points X and Y, which are 4 cm from AB and equidistant from A and B, Name the figure AXBY.
The locus of a point which moves so that it is always equidistant from the point A(a, 0) and B (- a, 0) is