How come we say drawn line has 0 width and using paper instead of drawn line has non 0 width? I can say a paper has 0 width as well. But if we are to stick to physical world, then neither drawn line nor paper has 0 width.
You can't just treat things differently just because.
If your point is to obstruct view of an object, knowing objects dimensions we can calculate it's position behind the paper wall/line.
You can't just treat things differently just because.
If your point is to obstruct view of an object, knowing objects dimensions we can calculate it's position behind the paper wall/line.