I was trying to make a hyperbola given the distance between its focii and the length of the transverse axis , which is to be drawn as shown in the last page of the link below

http://www.iitg.ac.in/kpmech/ME111-2016/Lecture-Curve-1.pdf

After drawing till step 2 I was facing a problem as to how to draw arcs of radius equal to the distance between the vertex and the arbitrary points (1,2,3 or 4). After searching a lot on google I was still not able to find can you please guide me as to how to do the same.