September 20, 2019 By Whence does an ellipse look like a circle? C. R. Math. Rep. Acad. Sci. Canada Vol. 20 (4) 1998, pp. 124–127 December 1, 1998 H.S.M. Coxeter Abstract/Résumé: No abstract available but the full text is online at the title link above. Keywords: AMS Subject Classification: Elementary problems in Euclidean geometries 51M04 [This journal is open access except for the current year and the preceding 5 years] PDF(click to download): Whence does an ellipse look like a circle?