How would a penrose triangle look to 2d people? Are there shapes in 3d that would be impossible in 4d?
Question Date: 2022-01-12
Answer 1:
Penrose triangle is a 2d shape. An observer looking at it from within the 2d space that it exists in, would see it much as you would if you were looking at the side of a building, the floorplan of which were built off of a Penrose triangle.
Answer 2:
Thanks for the great question!
The flat pictures of Penrose triangles would be what 2d people would see? I don't really know how to think in 2D.
Here's a link for making one with a 3D printer - you have to turn it at a certain angle to get the illusion:
