bn:01825690n
Noun Concept
Categories: Elementary geometry stubs, Elementary geometry
EN
generatrix  directrix
EN
In geometry, a generatrix or describent is a point, curve or surface that, when moved along a given path, generates a new shape. Wikipedia
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EN
In geometry, a generatrix or describent is a point, curve or surface that, when moved along a given path, generates a new shape. Wikipedia
A curve that, when rotated about an axis, produces a solid figure. Wiktionary
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