right strophoid

right strophoid

[′rīt ′strä‚fȯid]
(mathematics)
A plane curve derived from a straight line L and a point called the pole, consisting of the locus of points on a rotating line L ′ passing through the pole whose distance from the intersection of L and L ′ is equal to the distance of this intersection from the foot of the perpendicular from the pole to L.