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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 ... The angle thus inscribed is θ/2 and is part of a right triangle whose hypotenuse is the diameter. This is also useful in deriving some of the ...

www.khanacademy.org/math/basic-geo/basic-geo-area-and-perimeter/area-circumference-circle/v/parts-of-a-circle

The center of a circle is the point at which the distance to any part on the circle is exactly the same distance. The center is at the middle of the diameter and ...

www.mathopenref.com/pictorialindex.html

A pictorial index to the parts of a circle. A diagram with links to full definitions.

www.ck12.org/geometry/Parts-of-Circles/lesson/Parts-of-Circles-BSC-GEOM

Feb 24, 2012 ... Circles. A circle is the set of all points in the plane that are the same distance away from a specific point, called the center. The center of the ...

www.mathsisfun.com/geometry/circle.html

radius diameter circumference: circle/diameter = pi = 3.14159... The Radius is the distance from ... And a part of the circumference is called an Arc. circle slices ...

www.emathzone.com/tutorials/geometry/the-circle-and-parts-of-a-circle.html

The Circle and Parts of a Circle. The Circle. A circle is a plane curve consisting of all points that have the same distance from a fixed point, called the center.

www.brainfuse.com/jsp/alc/resource.jsp?s=gre&c=37818&cc=108830

Parts of a Circle. A circle is a set of all points in a plane that are all an equal distance from a single point, the center. The distance from a circle's center to a point ...

www.brightstorm.com/math/geometry/geometry-building-blocks/parts-of-a-circle

A chord is a line segment whose endpoints are on a circle. A diameter is a chord that passes through the center of a circle. Another one of the parts of a circle is ...

www.algebralab.org/lessons/lesson.aspx?file=Geometry_CircleDefinitions.xml

Introduction: A circle is all points equidistant from one point called the center of the circle. Segments drawn near and through the circle create other geometrical ...