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 …

An annulus (meaning little ring in Latin) is a ring-shaped figure between two concentric circles. Below are two examples. Think of an annulus as a circle with a concentric hole in it. An annulus is …

An annulus is a flat shape like a ring. Its edges are two circles that have the same center. Something shaped like an annulus is said to be annular. Because it is a circle with a circular hole, you can …

An annulus is a two-dimensional flat figure shaped in a circular form which is constructed by two concentric circles. The region or the area formed in between these two concentric circles is called the …

An annulus is a flat ring shaped object, much like the throw-ring shown on the right. One way to think of it is a circular disk with a circular hole in it. The outer and inner circles that define the ring are …

An annulus is a shape made out of two circles. An annulus is a plane figure formed between two concentric circles (the circles sharing a common center). The shape of the annulus is like a ring. …

An annulus is a flat, ring-shaped geometric figure. It is defined as the region on a plane that lies between two concentric circles —circles that share the same centre point but have different radii.

Nov 14, 2025 · The term 'annulus' comes from the Latin word annuli, meaning 'little ring.' An annulus is a flat, plane figure formed between two concentric circles, creating a ring-like shape.

An annulus is a two-dimensional shape with a curved outer border and a curved inner border. It can be used in mathematics, engineering, design, and other applications such as logos or frames for artwork.

Dec 3, 2025 · An annulus is a region lying between two concentric circles. The area of the annulus formed by two circles of radii a and b (with a>b) is A_ (annulus)=pi (a^2-b^2).