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Conchoid (mathematics)
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Fixed point O
Given curve
Each pair of coloured curves is length d from the intersection with the line that a ray through O makes. d > distance of O from the line
d = distance of O from the line
d < distance of O from the line
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In geometry, a conchoid is a curve derived from a fixed point O, another curve, and a length d. It was invented by the ancient Greek mathematician Nicomedes.[1]
- ^ Chisholm, Hugh, ed. (1911). . Encyclopædia Britannica. Vol. 6 (11th ed.). Cambridge University Press. pp. 826–827.
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