Disappearing Lines around a Circle
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This Demonstration illustrates a disappearing line paradox: count the lines, rotate, and count lines again.
Contributed by: Izidor Hafner (December 2012)
Open content licensed under CC BY-NC-SA
 B. A. Kordemsky, The Moscow Puzzles, London: Penguin, 1990, p. 290.
"Disappearing Lines around a Circle"
Wolfram Demonstrations Project
Published: December 2 2012