First step: Draw a line of length 1 inch and name it as AB
Second step:From point B produce a line of length 1 inch and mark the end as C
Third step : Now join AC and BC .
Fourth step: Now take your compass and take the length of AC and draw an arc touching the line.This will be your √1 after that do the same thing by taking AC as your base and you will get √2 and keep on taking the bases which u took for the radius. Hope this helped you!!!!!!!