| 单词 | power of a point |
| 释义 | > as lemmaspower of a point power of a point n. (with regard to a circle or sphere) the square of the distance from a given point to the point of contact of a tangent drawn from it so as to touch the circle or sphere; (equivalently) the product of the distances from the given point to the two points at which a chord drawn from it cuts the circle or sphere.extracted from powern.1< as lemmas |
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