Other off-campus examples of geometric theorems are the catenary curve
of the Capilano suspension bridge
and the hyperboloid of one sheet of the planetarium. (This honours
Wenger's use of this ruled surface in results on stabbing with lines
in three-space.)
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and the hyperboloid of one sheet of the planetarium. (This honours
Wenger's use of this ruled surface in results on stabbing with lines
in three-space.)