
Circle - Wikipedia
In strict mathematical usage, a circle is only the boundary of the disc (or disk), while in everyday use the term "circle" may also refer to a disc. Lens: the region common to (the intersection of) …
Circle – Definition, Parts, Properties, Formulas
Aug 3, 2023 · Find the area of a circle with a diameter of 10 cm.
Circles - Formulas, Properties | What is a Circle? | Examples
Observe the following figure to see the basic parts of a circle, the center, the radius, and the diameter of a circle. There are many parts of a circle that we should know to understand its …
What is a Circle? Definition, Formulas, Properties, Examples
What Is a Circle? A circle is a round-shaped figure that has no corners or edges. In geometry, a circle can be defined as a closed shape, two-dimensional shape, curved shape. A few things …
Circles: Circumference, Area, Arcs, Chords, Secants, Tangents, …
Circle worksheets, videos, tutorials and formulas involving arcs, chords, area, angles, secants and more.
Circle - Math is Fun
When we divide the circumference by the diameter we get 3.14159265... So when the diameter is 1, the circumference is 3.14159265... We can say: Circumference = π × Diameter. Example: …
Circle - Simple English Wikipedia, the free encyclopedia
A circle is a round, two-dimensional shape. All points on the edge of the circle are at the same distance from the center. The radius of a circle is a line from the center of the circle to a point …
Circle Definition - BYJU'S
In Maths or Geometry, a circle is a special kind of ellipse in which the eccentricity is zero and the two foci are coincident. A circle is also termed as the locus of the points drawn at an …
Circle | Circle Geometry, Radius & Diameter | Britannica
Jul 1, 2025 · circle, geometrical curve, one of the conic section s, consisting of the set of all points the same distance (the radius) from a given point (the centre). A line connecting any two …
Circle -- from Wolfram MathWorld
Jul 18, 2025 · A circle is the set of points in a plane that are equidistant from a given point . The distance from the center is called the radius, and the point is called the center. Twice the …