“180 degrees, 360 degrees, et al, are arbitrary numbers and measurements.
Try using radians...............”
Radians are just as arbitrary as degrees. The problem remains the same no matter what unit of measurement you choose. If space is curved, then a triangle must have more that 1 Pi radians total in its angles. We haven’t observed that.
re: “Radians are just as arbitrary as degrees.”
Oops.