from pygeo import * v=display(scale=70) p1 = FreePoint(-33.,-33,-3,color=WHITE) p2 = FreePoint(-23,33,4,color=WHITE) p3 = FreePoint(12,9,-14,color=WHITE) circle=CircumCircle(p1,p2,p3,color=BLUE) p4 = Slider(Plane(p1,p2,p3,level=2),1,9,-1,color=BLUE,pointsize=1.5) CircleInversion(p4,circle,color=RED,pointsize=1.5) v.pickloop()