To construct a square root spiral , follow the steps given below :
(a) draw a line AB of 1 unit.
(b) draw a line BC of 1 unit perpendicular to AB.
(c) join A to C and that forms ur √2 ( root 2 ).
(d) draw line CD perpendicular to AC.
(e) join AD and continue this process upto √13 ( root 13 ).