A loop, often referred to as a circle, is a closed curve where every point is equidistant from a central point. This shape is fundamental in geometry and can be found in various contexts, such as in nature, art, and design. The distance from the center to any point on the loop is called the radius, while the total distance around the loop is known as the circumference. In mathematics, loops are studied in various branches, including geometry and trigonometry. They also appear in everyday life, such as in the design of wheels, rings, and hula hoops. Understanding loops helps in grasping concepts related to symmetry and circular motion.