bn:21706353n
Noun Concept
Categories: Algebraic curves, Roulettes
EN
deltoid curve  3-cusped hypocycloid  delt­oid  Steiner curve  Steiner deltoid
EN
In geometry, a deltoid curve, also known as a tricuspoid curve or Steiner curve, is a hypocycloid of three cusps. Wikipedia
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EN
In geometry, a deltoid curve, also known as a tricuspoid curve or Steiner curve, is a hypocycloid of three cusps. Wikipedia
A three-cusped hypocycloid Wikipedia Disambiguation