What is a circle?

A circle is a perfectly round shape where every point on its edge is equidistant from a central point, known as the center. Imagine blowing up a balloon—no matter where you measure from the center, you'll always hit the same distance from it to the balloon’s surface! This distance is called the radius, and the entire smooth boundary is the circle itself. In real life, circles are everywhere! From the wheels on your bike to the round pizzas you enjoy, circles are essential in design and engineering. Plus, they play vital roles in measuring time with clocks and navigating with compasses. Next time you're admiring a ferris wheel or playing a game of basketball, remember, you're embracing the simple beauty of circles around you!