1) Cardioid
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https://www.crosswordclues.com/clue/epicycloid
1) Line roulette 2) Roulette
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https://www.crosswordclues.com/clue/epicycloid
In geometry, an epicycloid is a plane curve produced by tracing the path of a chosen point of a circle — called an epicycle — which rolls without slipping around a fixed circle. It is a particular kind of roulette. If k is an integer, then the curve is closed, and has k cusps (i.e., sharp corners, where the curve is not differentiable). If k i...
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http://en.wikipedia.org/wiki/Epicycloid
• (n.) A curve traced by a point in the circumference of a circle which rolls on the convex side of a fixed circle.
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http://thinkexist.com/dictionary/meaning/epicycloid/
The path traced out by a point on the circumference of a circle of radius b rolling on the outside of a circle of radius a. It is described by the parametric equations: x = (a + b) cos(t) - b cos[(a/b + 1)t], y = (a + b) sin(t...
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http://www.daviddarling.info/encyclopedia/E/epicycloid.html
<geometry> A curve traced by a point in the circumference of a circle which rolls on the convex side of a fixed circle. ... Any point rigidly connected with the rolling circle, but not in its circumference, traces a curve called an epitrochoid. The curve traced by a point in the circumference of the rolling circle when it rolls on the concave...
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http://www.encyclo.co.uk/local/20973
Ep`i·cy'cloid noun [
Epicycle +
-oid : confer French
épicycloïde .]
(Geom.) A curve traced by a point in the circumference of a circle which rolls on the convex side of a fixed circle. » Any point rigidly connected with the rolling circle, but not in its circumferen...
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http://www.encyclo.co.uk/webster/E/54
In geometry, an epicycloid is a curve generated by the movement of a circle upon the convex side of another curve, that generated by the movement of a circle upon the concave side of a fixed curve being called a hypocycloid.
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http://www.probertencyclopaedia.com/browse/GE.HTM
[
n] - a line generated by a point on a circle rolling around another circle
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http://www.webdictionary.co.uk/definition.php?query=epicycloid
noun a line generated by a point on a circle rolling around another circle
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https://www.encyclo.co.uk/local/20974
In geometry, a curve resembling a series of arches traced out by a point on the circumference of a circle that rolls around another circle of a different diameter. If the two circles have the same diameter, the curve is a cardioid
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https://www.encyclo.co.uk/local/21221
a curve generated by the motion of a point on the circumference of a circle that rolls externally, without slipping, on a fixed circle. Equation:= (a + b) cos &thgr; − b cos [(a + b)&thgr;/b] and y = (a + b) sin &thgr; − b sin [(a + b)&thgr;/b]. Cf. epitrochoid. x
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https://www.infoplease.com/dictionary/epicycloid
No exact match found.
