Rotating a 2d being in 3d space would be trippy and probably lethal. A 2d being would have it’s entire existence on a specific fixed 2d plane cutting through space- by rotating it, you’ve completely redefined the entire plane, and everything that the creature knew about and had built would be permanently lost.
Theoretically if you rotated the creature 180°, it could again perceive things from its own world, though in a very different way. But you’d think a sufficiently smart 2 dimensional creature could come to recognize that it was indeed the same world just mirrored.
Though it’s possible this creature’s chemistry would have a “handedness” and it could no longer metabolize the nutrients that exist in that world.
Hmmm, yeah I’d imagine chemistry would develop a specific handedness. It’s a bizarre thing to think about
obligatory Breaking bad
The fourth dimension is super interesting to think about. A person meddling in the 2d plane eould appear to the 2d world as a flat mass suddenly warping into their world… And a 4d creature would similarly warp into our world outta nowhere as a inexplicable mass because we are unable to view the creature, in it’s entirety, in our plane of existence.
A great series of videos that lead you through imagining various dimensions https://m.youtube.com/playlist?list=PL1AsNeksGCNNhfD5ixyTMV0n61KX-zc1d
Great book written in the late 1800s called “Flatland” tackled this shit pretty well. Still a great read, still messes with your head.