Epitrochoid
id:
epitrochoid-163-11093396
title:
Epitrochoid
text:
In geometry, an epitrochoid is a roulette traced by a point attached to a circle of radius r rolling around the outside of a fixed circle of radius R, where the point is at a distance d from the center of the exterior circle. The parametric equations for an epitrochoid are:
- x = cos θ − d cos y = sin θ − d sin The parameter θ is geometrically the polar angle of the center of the exterior circle. Special cases include the limaçon with R = r and the epicycloid with d = r. The classic Sp
brand slug:
wiki
category slug:
encyclopedia
description:
Plane curve formed by rolling a circle on the outside of another
original url:
https://en.wikipedia.org/wiki/Epitrochoid
date created:
2005-02-26T15:25:53Z
date modified:
2024-08-28T14:16:17Z
main entity:
{"identifier":"Q1088210","url":"https://www.wikidata.org/entity/Q1088210"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/2/20/EpitrochoidIn3.gif","width":452,"height":454}
fields total:
13
integrity:
16