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when toggle format what by license comment
Jun 21, 2017 at 11:24 history edited Joseph O'Rourke CC BY-SA 3.0
Image link broken; now fixed.
Sep 1, 2010 at 17:09 comment added Michael Hardy That matches my own way of picturing it, but I had to go through the description painstakingly to figure out that that's what is meant.
Sep 1, 2010 at 15:23 comment added David Eppstein Much better now.
Sep 1, 2010 at 10:22 history edited Joseph O'Rourke CC BY-SA 2.5
Fixed as per David's comment.
Sep 1, 2010 at 2:29 comment added David Eppstein Close, but you need to rotate the half-disk by a right angle from how you've drawn it. In the orientation shown it will double cover the top half of the napkin ring and completely miss the bottom half.
Sep 1, 2010 at 1:53 history answered Joseph O'Rourke CC BY-SA 2.5