bn:00045589n
Noun Concept
Categories: Roulettes
EN
hypocycloid  hypocycloidal  Hypocycloidal gear  hypocycloids
EN
A line generated by a point on a circle that rolls around inside another circle WordNet 3.0
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EN
A line generated by a point on a circle that rolls around inside another circle WordNet 3.0 & Open English WordNet
In geometry, a hypocycloid is a special plane curve generated by the trace of a fixed point on a small circle that rolls within a larger circle. Wikipedia
Curve drawn by a circle rolling in another circle. Wikidata
The locus of a point on the circumference of a circle that rolls without slipping inside the circumference of another circle. Wiktionary
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