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  1. Circle - Wikipedia

    Natural circles are common, such as the full moon or a slice of round fruit. The circle is the basis for the wheel, which, with related inventions such as gears, makes much of modern machinery possible.

  2. 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.

  3. Circle - Math is Fun

    There are two main slices of a circle. The Quadrant is a special sector with a right angle. It has a quarter of the circle's area. Half a circle is called a Semicircle.

  4. Circle Calculator

    This calculator computes the values of typical circle parameters such as radius, diameter, circumference, and area, using various common units of measurement.

  5. Circles | Brilliant Math & Science Wiki

    In case of a circle, it is much easier since we only need its radius or diameter to describe its geometry. Circle. Then, what are the radius and diameter of a circle? Their concepts are very important in …

  6. Circle – Definition, Parts, Properties, Formulas

    Aug 3, 2023 · Find the area of a circle with a diameter of 10 cm.

  7. 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 around us …