BiChord.py

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)

circle1=CircumCircle(p1,p2,p3,color=BLUE)

p1a = Slider(circle1,1,9,-1,color=WHITE)
p2a = Slider(circle1,1,7, 1,color=WHITE)
p3a = Slider(circle1,9,14,5,color=WHITE)

circle2=CircumCircle(p1a,p2a,p3a,color=BLUE)

BiChord(circle1,circle2,color=RED,linewidth=.5)

v.pickloop()