Hello,

Nowadays I'm scratching my head how to draw a circle in a NON-ISOMETRIC view in AutoCAD.

I've watched several videos on youtube, but all of them speaks about ISOMETRIC view, and that's not what I'm looking for.

For illustration, I just attached a picture for better understanding:

1) I drew the situation from a 2-D Point of view. The blue angle is the thing I'd like to draw in a 3-D Perspective (circle in non-isometric).

2) I drew the situation from a 2-D with perspective point of view. I drew the perspective following isometric reference from AutoCAD.

3) I drew the situation from a 3-D with perspective point of view. It's like the purple rectangle was rotated within the space according to GREEN angle, and then I'd like to draw the blue angle, which is the arc of a circle (ellipse perspective).

and that's my problem, I dont know how to draw it. I need to have an ellipse arc within the WHITE circle I highlighted in the inferior-right corner.

• https://files.engineering.com/getfile.aspx?folder=7fb7c2eb-8140-4fba-908a-4