I am working on a “foldable geometry” piece and I am trying to understand how I can determine the orientation of a circle. (meaning, where is the start point of the curve)

When drawing a circle by center/radius it appears to use the world XYZ with the starting point at the 3 o’clock quadrant and then moving counterclockwise.

Since the geometric basis prevents me from using a Circle by points (presumably one of those points would be the origin), I thought that the circle by Plane Radius would make the circle inherit the plane orientation.

On the example (and image) attached, it appears to do so for the first couple of circles. But then on the fourth & fifth circle it appears to ignore the plane orientation.

Any thoughts on how else I could control the orientation of the circle, knowing that it will be rotated in 3 dimensions?

circleOrientationDyn.dyn (84.2 KB)