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  1. Circle | A new era for digital businesses

    Circle is the AI-powered home for your community. From a branded website to discussions, courses, events, payments, email marketing, AI agents, and more, Circle gives you everything you need to …

  2. Circle - Wikipedia

    A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre. The distance between any point of the circle and the centre is called the radius. The length of …

  3. Circle - Math is Fun

    A circle is easy to make: Draw a curve that is radius away from a central point. And so: All points are the same distance from the center.

  4. CIRCLE Definition & Meaning - Merriam-Webster

    Jun 20, 2026 · The meaning of CIRCLE is ring, halo. How to use circle in a sentence.

  5. Circles - Formulas, Properties | What is a Circle? | Examples

    A circle is a 2-dimensional closed shape that has a curved side whose ends meet to form a round shape. Learn about circles with concepts, properties, and examples.

  6. circle - Wiktionary, the free dictionary

    Jun 10, 2026 · circle (plural circles) (geometry) A two-dimensional geometric figure, a line, consisting of the set of all those points in a plane that are equally distant from a given point (center).

  7. All About Circles - Definition, Examples, Formulas | DoodleLearning

    Circles make the world go ’round. Learn about the all-important shape, the circle, in our handy guide.

  8. CIRCLE Definition & Meaning | Dictionary.com

    CIRCLE definition: a closed plane curve consisting of all points at a given distance from a point within it called the center. Equation: x 2 + y 2 = r 2 . See examples of circle used in a sentence.

  9. Circle -- from Wolfram MathWorld

    Jun 13, 2026 · A circle is the set of points in a plane that are equidistant from a given point O. The distance r from the center is called the radius, and the point O is called the center. Twice the radius …

  10. Circles | Geometry (all content) | Math | Khan Academy

    Explore, prove, and apply important properties of circles that have to do with things like arc length, radians, inscribed angles, and tangents.