Hi Elang,
""""""""
- The horizontal line of A1-A2, with x√2 length comes first in the quiz.""""""""""""

Here is a video I made creating a random x√2 value.



It works with any of the other 3 values given at any value.

The V axis is also irrelevant. All the rotation in the video is just to express it. The 3 point arc is valid. If you had geometry in some random world coords that you didnt want to move and rotate around, you could create a CPlane in that area on the Axis of your choice.