Concept information
Término preferido
astroid
Definición
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In mathematics, an astroid is a particular type of roulette curve : a hypocycloid with four cusps. Specifically, it is the locus of a point on a circle as it rolls inside a fixed circle with four times the radius. By double generation, it is also the locus of a point on a circle as it rolls inside a fixed circle with 4/3 times the radius. It can also be defined as the envelope of a line segment of fixed length that moves while keeping an end point on each of the axes. It is therefore the envelope of the moving bar in the Trammel of Archimedes.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Astroid)
Concepto genérico
En otras lenguas
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francés
URI
http://data.loterre.fr/ark:/67375/PSR-L0HV0DT4-V
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