Annulus (mathematics)
= Annulus
{disambiguate=mathematics}
{wiki}
= Annulus
{synonym}
= Annuli
{synonym}
An annulus is the region between two concentric circles.
= Annulus
{disambiguate=mathematics}
{wiki}
= Annulus
{synonym}
= Annuli
{synonym}
An annulus is the region between two concentric circles.