Need help with drawing a line


I have a point P on the surface and normal N . Can someone help me how to draw a line so that I can recognize the normal pose.

Thanks & Regards,

does P+ d*N gives me the second point so that I can draw a line ??

where d is some distance.

yes, or p+N, if your Normal is normalized. In which case it will give you a second point of distance 1 away from your first point P.