why is It easy to place sphere than circles …???

spheres(which are 3d) are easy circles(2d)

is there a way where points can be used as planes to create geometry or orient ???

import rhinoscriptsyntax as rs

for i in range(0,20):

a = rs.AddPoint(i,0,0)

rs.AddSphere(a,i/12)

is possible

why not

import rhinoscriptsyntax as rs

for i in range(0,20):

a = rs.AddPoint(i,0,0)

rs.AddCircle(a,i/12)