What is Epicycloid?
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In geometry, an epicycloid is a plane curve produced by tracing the path of a chosen point of a circle — called epicycle — which rolls without slipping around a fixed circle. It is a particular kind of roulette.
The epicycloid is a special kind of epitrochoid.
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The onion bridge is the space between a mans anus and the beginning of his scrotum.
Ouch! These underpants really chafe my onion bridge..
