| NOUN | shape | line roulette, roulette | a line generated by a point on one figure rolling around a second figure |
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| Meaning | A line generated by a point on one figure rolling around a second figure. | |
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| Synonym | roulette | |
| Narrower | cycloid | A line generated by a point on a circle rolling along a straight line |
| epicycloid | A line generated by a point on a circle rolling around another circle | |
| hypocycloid | A line generated by a point on a circle that rolls around inside another circle | |
| Broader | curve, curved shape | The trace of a point whose direction of motion changes |
| Spanish | ruleta | |
| Catalan | ruleta | |
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