Reflections on a problem of geometry dealt with by several geometers, but which nevertheless is impossible
According to Eneström, the main problem of this paper is to find a curve MAN around a fixed point C, such that if one draws any straight line MCN through C, intersecting the curve at two points M and N, the tangents MT and NT, extended from these points, meet at T in a given angle.
Original Source Citation
Mémoires de l'académie des sciences de Berlin, Volume 10, pp. 173-199.
Opera Omnia Citation
Series 1, Volume 27, pp.340-363.