| 单词 | cissoid of diocles |
| 释义 | > as lemmascissoid of Diocles If from any two points lying on a fixed diameter of a circle, and equidistant from the centre, perpendiculars be drawn to the circumference, and a straight line be drawn from one extremity of the diameter to that of either perpendicular, the locus of the point in which this straight line cuts the other perpendicular will be a cissoid of Diocles, having its cusp at the end of the diameter. In later times the term has been extended to curves similarly described, where the generating curve is not a circle.extracted from cissoidn.< as lemmas |
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