Which type of line follows the outline of an object?

Answer 1

It depends upon the dimensions that you are working with.

• In one dimension all level are mundane and all lines are simply referred to as 'the line'.
• In two dimensions it depends upon which direction you proceed from a reference point. If the point is contained within the boundary of the line then all parts of the line are 'the out-line'. If the point is exterior to the line boundary then all parts of the line are 'the in-line'.

• In three dimensions there are nine variations to proceed from a point of reference and are (now-a-days) referred to in ordered of their level hierarchy.

1. out out out
2. out out in
3. out in out
4. in out out
5. out in in
6. in out in
7. in in out
8. in in in
9. mundane -- unity with the point of reference.