Center of a circle
point equidistant from all points on the circle
The center of a circle is the point that is equidistant from all points on the circumference of the circle. In other words, if you were to draw lines from the center of the circle to any point on its circumference, each of those lines would be the same length. The center of a circle can be identified by drawing any two diameters of the circle (lines that pass through the center and have endpoints on the circumference). The point where the two diameters intersect is the center of the circle. It is often denoted by the letter O in geometry problems and is an important concept in geometry, trigonometry, and calculus. The properties of a circle, such as its radius, area, circumference, and arc length, are all related to its center.
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