zCircumPoint.py

from pygeo import *

v=display(scale=7, axis_2d=True)

zp1=zPoint(1,3,color=WHITE)
zp2=zFreePoint(-1,-4,color=WHITE)
zp3=zFreePoint(2,-3,color=WHITE)
zcircle=zCircle(zp1,zp2,zp3,color=BLUE)

zCircumPoint(zcircle,angle=PI/3,color=RED,pointsize=.15)

v.pickloop()