en.wikipedia.org/wiki/Circular_segment

In **geometry**, a circular **segment** (symbol: ⌓) is a region of **a circle** which is "cut off"
from the rest .... **Area**[edit]. The **area** A of the circular **segment** is equal to the **area**
of the circular sector minus the **area** of the triangular portion. A = R 2 2 ( θ − sin ...

en.wikipedia.org/wiki/Arc_(geometry)

To get the **area** of the **arc segment**, we need to subtract the **area** of the triangle,
determined by the circle's center and the two ...

en.wikipedia.org/wiki/Circular_sector

A circular sector or circle sector (symbol: ⌔), is the portion of a disk enclosed by
two radii and an **arc**, where the smaller **area** .... Gerard, L. J. V. The Elements of
**Geometry**, in Eight Books; or, First Step in Applied Logic, London, Longman's
Green ...

www.coolmath.com/reference/circles-trigonometry

Definitions and formulas for the **arc** and the **arc** length of **a circle**, sector and the
**area** of the sector of **a circle**, the unit circle, the angles on the unit circle in ...

www.purplemath.com/modules/sectors.htm

Explains formulas for **areas** of sectors of circles and lengths of **arcs**.
Demonstrates how to use the formulas in each of degrees and radians.

mathbitsnotebook.com/Geometry/Circles/CRAreaSegmentsSectors.html

MathBitsNotebook **Geometry** CCSS Lessons and Practice is a free site for ...
When finding the **area** of **a sector**, you are actually finding a fractional part of the ...

www.khanacademy.org/math/geometry/hs-geo-circles/hs-geo-sectors/v/area-of-a-sector-given-a-central-angle

A worked example of finding the **area** of **a circle's** sector using the **area** of the ...
Some of the **geometry** section overlaps with the trigonometry section, which may
...

mathworld.wolfram.com/CircularSegment.html

of the (shaded) **segment** is then simply given by the **area** of the circular sector (
the entire wedge-shaped ... so the **geometric** centroid of the circular **segment** is ...

www.mathopenref.com/arcsectorarea.html

The formula used to find the **area** of a circlular sector - a pie-shaped part of **a**
**circle**.