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.
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.
Circles make the world go ’round. Learn about the all-important shape, the circle, in our handy guide.
Test your understanding of Circles with these 12 questions. Explore, prove, and apply important properties of circles that have to do with things like arc length, radians, inscribed angles, and tangents.
