The perpendicular line segment passing through P is then the projection of l2 onto l1 minus l2. 5. Use the line segment to define a line through point P.<BR><BR>If you want I can provide more detail, ...

The notion of dimension at first seems intuitive. Glancing out the window we might see a crow sitting atop a cramped flagpole experiencing zero dimensions, a robin on a telephone wire constrained to ...