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单词 Parabola Pedal Curve
释义

Parabola Pedal Curve

On the Directrix, the Pedal Curve of a Parabola is a Strophoid (topleft). On the foot of the Directrix, it is a Right Strophoid (top middle). Onreflection of the Focus in the Directrix, it is a Maclaurin Trisectrix (topright). On the Vertex, it is a Cissoid of Diocles (bottom left). On the Focus, it isa straight line (bottom right).


References

Lawrence, J. D. A Catalog of Special Plane Curves. New York: Dover, pp. 94-97, 1972.


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更新时间:2025/2/22 2:16:54