Question 925161
{{{drawing(300,300,-3,6,-3,6,grid(1),circle(1,1,0.2),circle(5,3,0.2),circle(3,0,0.2),circle(-1,-2,0.2),blue(line(-1,-2,1,1)),blue(line(3,0,5,3)),blue(line(1,1,5,3)),blue(line(-1,-2,3,0)))}}}