Zizka's Sketchbook (Nudity and Vulgarity, NSFW)

[Zizka]

Any actual slantedness is most likely due to you being VERY slightly off when making lines with the line tool

This might sound conceited by I drew those freehand, no line tool :). So you flattered me and I felt like saying it.

Which I think is the same spot as the far ends of the major axis, or greatest diameter of the ellipse. (Anyone, feel free to correct if that's wrong.)

I'd also like confirmation of this as this is my understanding of it.

In a perfect cylinder, the connecting lines will appear wherever they make a clean angle with the frontal face of the cylinder (as opposed to intersecting it in a perpendicular fashion).

I'm not sure I understand the concept of "clean angle". I mean, I don't understand what it means in practical terms.