†(a) the meridian from which longitude is reckoned (obsolete); (b) a circle in which a sphere intersects the plane on to which its surface is to be…
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| 单词 | θ115924 |
| 释义 | the world > relative properties > number > geometry > shape or figure > [noun] > two-dimensional > closed curve > circle > other (4) primitive circle1690 †(a) the meridian from which longitude is reckoned (obsolete); (b) a circle in which a sphere intersects the plane on to which its surface is to be… right circle1842 a circle whose plane is perpendicular to a given plane; (Astronomy) a great circle of the celestial sphere whose plane is perpendicular to the… point-circle1865 a mathematical point regarded as an infinitesimally small circle, or as a degenerate form of a circle. in-circle1883 An inscribed circle. |
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