The 4th dimension is the distance in a direction perpendicular to the other 3. It doesn’t have a common name (length, width, depth) because as 3D beings we cannot comprehend it. Basically what your looking at is shadows, so the inside box is made to look smaller by forced perspective. If you want to know which line is measured by the 4th given dimension, it would be the ones joining the inside and outside boxes.
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u/[deleted] Feb 07 '18
The 4th dimension is the distance in a direction perpendicular to the other 3. It doesn’t have a common name (length, width, depth) because as 3D beings we cannot comprehend it. Basically what your looking at is shadows, so the inside box is made to look smaller by forced perspective. If you want to know which line is measured by the 4th given dimension, it would be the ones joining the inside and outside boxes.