Abstract
A universal cover is a set K with the property that each set of unit diameter is a subset of a congruent copy of K. It is shown that the smallest regular n-gon, for fixed n ≥ 4, which serves as an universal cover in R 2 is the smallest regular n-gon covering a Reuleaux triangle of unit width.
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References
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Chakerian, D., Logothetti, D. Minimal regular polygons serving as universal covers in R 2 . Geom Dedicata 26, 281–297 (1988). https://doi.org/10.1007/BF00183020
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DOI: https://doi.org/10.1007/BF00183020