"Angles are measured by arcs, such that 360° and 2π correspond to each other."
— Hans Freudenthal

January 1, 1970

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Jews from GermanyJews from the NetherlandsMathematicians from the NetherlandsHistorians of mathematics
Original Language: English

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p. 477

https://en.wikiquote.org/wiki/Hans_Freudenthal

p. 477