1. Scenes can have any number of vanishing points. That means you can have boxes in the same scene that don't share the same vanishing points as other boxes because they've been rotated or otherwise skewed. This is something Comfy tries to establish with the rotated boxes and it goes against what a lot of traditional perspective courses will tell you because a lot of people don't draw with that kind of rigid plotted out perspective.

2. The rotated boxes aren't actually cubes (https://drawabox.com/lesson/1/16/step4). As for the perspectives each box is in, it doesn't really matter a whole lot, since as noted above, you can have any number of vanishing points in a scene with boxes rotated on any of their axes - what's important is the rate of foreshortening when doing so, which is something you'll explore more in lesson 2's form intersections.

3. The boxes in the 250 box challenge should be all sorts of orientations, rates of foreshortening, and size. Context is what makes a box rotated or not - if you drew a random box on a page and extended its lines back to the horizon, that box would not be considered rotated. If you only drew one of the extremity boxes in the rotated boxes exercise and nothing else, it wouldn't really be a rotated box till you added the other boxes. So the answer is you don't have to rotate boxes in relation to each other in the 250 box challenge unless you feel you need to add another layer of difficulty to keep things interesting once you've nailed down your convergences.

I guess the take away is don't overthink it too much. Drawabox is here to teach you an intuitive grasp of perspective that doesn't adhere to the usual strict rules of plotting everything back and establishing X number of vanishing points in a scene, because not everything will adhere to those perfect rules.

In this instance, for the 250 Challenge, each box will have their own set of vanishing points. These different vanishing points will be making up the scene. You determine these points by how you construct your first 2 planes. They are not rotated per se, as they all don't share a VP(s), but it is good to make the boxes in a wide variety of Y variations. From what I understand, it is at your discretion how many VPs you use. However, it seems that using 3 point perspective more often is what you should strive for, as it is more difficult to keep track of.

I hope this helps you, good luck!

Best,

Chuddy

If you go on gumroad and get Krenz Cushart's how to control angle and proportion in perspective and his how to rotate in perspective lessons (itll cost you 20 dollars) he explains clearly what is happening. I will try to explain it though. All VPs are a distance relationship between the viewer object and horizon line. Basically, imagine your VPs on the horizon line as your rotation of object, then imagine your 3rd vanishing point as the viewing angle of a camera (your eye). all objects in the scene do not work off of the same perspective vanishing points, but they are all related via the ground surface level and the cone of vision. In summary, when you rotate an object left and right, you are turning two lines that meet at a 90 degree corner and therefore moving the points they meet the horizon line (NEW INTERSECTIONS). If you are looking at a 45 degree corner of a box, in plan view it would look like a triangle. If you rotate this through to 45 degrees one of the vanishing points becomes parallel to the horizon line, you are now in one point perspective. continue this rotation and you are back in two point perspective. Think of your 3rd vanishing point as the angle you are witnessing this happen at.