Epitrochoid vs. Epitrochoidal

Epitrochoid vs. Epitrochoidal — Is There a Difference?
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Difference Between Epitrochoid and Epitrochoidal

Epitrochoidnoun

A geometric curve traced by a fixed point on one circle which rotates around the perimeter of another circle. Examples include the shape of the Wankel engine

Epitrochoidaladjective

Being or relating to an epitrochoid.

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