The narrow corridors maintained a constant width, half a man's height.
The surprising answer is that there are many non-circular shapes of constant width.
Curves of constant width can be rotated between parallel line segments.
Consequently, a curve of constant width can be rotated in a square.
A sphere is obviously a surface of constant width.
The deck plan is mostly straight with a constant width of 18.6 meters.
The coin's outline is an 11-sided curve of constant width.
This area is , where s is the constant width.
The constant width of such coins allows their use in coin-operated machines.
The second is a strong transverse band, of more or less constant width, at mid length.