Large circles are geometric shapes defined as the set of all points in a plane that are equidistant from a central point, known as the center. The distance from the center to any point on the circle is called the radius. Large circles can be found in various contexts, such as in architecture, art, and nature, where they often symbolize unity and completeness. In mathematics, the circumference of a large circle can be calculated using the formula C = 2\pi r, where C is the circumference and r is the radius. The area of a large circle is determined by the formula A = \pi r^2. These properties make large circles important in fields like geometry, engineering, and design.