Generatrix
Geometric object moved along a path to generate a shape / From Wikipedia, the free encyclopedia
In geometry, a generatrix (/dʒɛnəˈreɪtrɪks/) or describent is a point, curve or surface that, when moved along a given path, generates a new shape.[1] The path directing the motion of the generatrix motion is called a directrix or dirigent.[2]
Geometric object moved along a path to generate a shape

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