I meant -170, not -10. I'm drinking so I said the wrong thing but it's the same basic idea and you just don't know how to use GIMP. 10 more than 180 is -170 in GIMP logic. I made a simple mistake in saying that, but the point is that you can have a negative angle to represent a positive angle that is greater than 180.
190 is the same as -170 in GIMP. I recorded proof:
https://my.mixtape.moe/xofeah.mp4I would have uploaded to imgur, but they limit uploads to 30 seconds and I didn't feel like editing it or re-recording.