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Annulus (mathematics)

In mathematics, an annulus (pl.: annuli or annuluses) is the region between two concentric circles. Informally, it is shaped like a ring or a hardware washer. The word "annulus" is borrowed from the Latin word anulus or annulus meaning 'little ring'. The adjectival form is annular (as in annular eclipse).

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Annulus (mathematics)

Nodes32
Edges31
Triples0
Avg. degree1.94
Density0.0625
Components1

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Important terminology

annulus plane area complex region two mathematics radius theorem annuli concentric form annular open punctured structure also circle tangent latin

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