Proceedings of the Edinburgh Mathematical Society, Volumes 5-6

according angle aperture axis base centre centrode cercle chord common conique considered constant construction contain corresponding cross curve density describe determined deux diameter difference direction distance draw drawn droite Edinburgh equal equation equiangular equilateral Euclid expression figure fixed fluid four foyer given circle given point given straight line gives greater half Hence infinite inscribed intersect inverse Join less mean meeting method n-gon Note obtained parallel passes perpendicular plane polygon position problem produced progression proportional PROPOSITION prove question radical radius rapport ratio reference relation respect result sides similar similitude solution square supposed Take taken tangent theorem third transformation triangle triangle ABC valeur vortex vortices δε