14 Oct
2019
14 Oct
'19
5:42 a.m.
MathWorld: "The lituus is the locus of the point [image: P] moving such that the area <http://mathworld.wolfram.com/Area.html> of a circular sector <http://mathworld.wolfram.com/CircularSector.html> remains constant." What circle? What sector? Pic? —rwg