Circle Tangent on a sphere ?

 From:  Frenchy Pilou (PILOU)
5435.6 In reply to 5435.4 
@Stephan
<< I did the following: I draw my (center) circle on the sphere were i want it, with the given size, then intrude the circle and do on both objects a "Curve" intersect command. Now i have a circle which is exact the size of a given circle, fitting on a sphere.

how do you make the circle perpendicular to surface of the sphere before the intrude ? Because the circle can like this has any orientation

I can also draw a cylinder from the center of the sphere passing by the point I want then Curve / Intersect and killl the cylinder ! ;)

EDITED: 29 Sep 2012 by PILOU