Reply To: Loops changing direction without poles
Hi Cristian,
That one is also the most complicated…If you care to look at my picture of the Cube:
then starting at the bottom corner, you see that the green and blue lines start out being parallel, and the they cross over one another and go their separate ways, no longer being parallel!
This means that at least one of them has changed direction.
However, you can consider the green line to go straight and then the blue line has changed direction, or the blue line goes straight and then the green changes direction…or both change direction…
This happens all the time in traffic…you can have a Y-crossing and one direction is considered going straight and the other is changing direction…or on a roundabout, going around is considered going straight, and leaving the roundabout is changing direction.