What is a circle?

A circle is a perfectly round geometric shape where every point on the boundary is equidistant from a central point known as the center. This distance is called the radius. Circles are not just for math class; they can be found in nature and art, from the rings of trees to the mesmerizing patterns of the Milky Way! Did you know that the concept of a circle dates back to ancient civilizations? The Egyptians and Babylonians had a deep understanding of circular shapes, using them for everything from calendars to astronomy. The Greeks later formalized the study of circles, with famous mathematicians like Euclid describing their properties in detail!