Conchoid
[kong-koid] /ˈkɒŋ kɔɪd/
noun, Geometry.
1.
a plane curve such that if a straight line is drawn from a certain fixed point, called the pole of the curve, to the curve, the part of the line intersected between the curve and its asymptote is always equal to a fixed distance. Equation: r = b ± a sec(θ).
/ˈkɒŋkɔɪd/
noun
1.
(geometry) a plane curve consisting of two branches situated about a line to which they are asymptotic, so that a line from a fixed point (the pole) intersecting both branches is of constant length between asymptote and either branch. Equation: (x – a)²(x² + y²) = b²x² where a is the distance between the pole and a vertical asymptote and b is the length of the constant segment
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