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In plane geometry the Blaschke–Lebesgue theorem states that the Reuleaux triangle has the least area of all curves of given constant width. In the form that every curve of a given width has area at least as large as the Reuleaux triangle, it is also known as the Blaschke–Lebesgue inequality. It is named after Wilhelm Blaschke and Henri Lebesgue, who published it separately in the early 20th century.

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  • In plane geometry the Blaschke–Lebesgue theorem states that the Reuleaux triangle has the least area of all curves of given constant width. In the form that every curve of a given width has area at least as large as the Reuleaux triangle, it is also known as the Blaschke–Lebesgue inequality. It is named after Wilhelm Blaschke and Henri Lebesgue, who published it separately in the early 20th century. (en)
  • Twierdzenie Blaschkego-Lebesgue’a – twierdzenie z dziedziny geometrii euklidesowej udowodnione przez Wilhelma Blaschkego i Henriego Lebesgue’a. (pl)
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  • In plane geometry the Blaschke–Lebesgue theorem states that the Reuleaux triangle has the least area of all curves of given constant width. In the form that every curve of a given width has area at least as large as the Reuleaux triangle, it is also known as the Blaschke–Lebesgue inequality. It is named after Wilhelm Blaschke and Henri Lebesgue, who published it separately in the early 20th century. (en)
  • Twierdzenie Blaschkego-Lebesgue’a – twierdzenie z dziedziny geometrii euklidesowej udowodnione przez Wilhelma Blaschkego i Henriego Lebesgue’a. (pl)
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  • Blaschke–Lebesgue theorem (en)
  • Twierdzenie Blaschkego-Lebesgue’a (pl)
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