![]() ![]() It is a curve that is a part of its circumference.Īn arc that connects the endpoints of the diameter has a measure of 180° and it is called a semicircle.Īn arc divides the circle into two parts. The diameter of a circle is its largest chord.Īn arc is a part of the circle, with all its points on the circle. It is the same as the perimeter of other shapes.Ī line segment with its endpoints lying on a circle is called the chord of the circle. The circumference of a circle is the distance around a circle. So, a quarter circle is a quarter of a circle, formed by splitting a circle into 4 equal parts or a semicircle into 2 equal parts.Ī quarter circle is also called a quadrant.Ī radius is a line segment with one endpoint at the center of the circle and the other endpoint on the circle.Ī line segment passing through the center of a circle, and having its endpoints on the circle, is called the diameter of the circle. This line segment is called the diameter of the circle. It is formed by cutting a whole circle along a line segment passing through the center of the circle. ![]() Semi means half, so semicircle is half a circle. For example points U and V lie on the circle. For example points S and T lie on the exterior of the circle.Īll those points for which the distance is equal to that of the radius of a circle lie on the circle. For example points P, Q, and R lie in the interior of the circle.Īll those points for which the distance is greater than the radius of a circle lie in the exterior of the circle. A circle has an interior and an exterior region.Īll those points for which the distance is less than the radius of a circle lie in the interior of the circle. Here, point P is the center of the circle.Ĭonsider the circle with center P and radius r. This distance is called the radius of the circle. The center of a circle is the center point in a circle from which all the distances to the points on the circle are equal. In geometry, a circle can be defined as a closed, two-dimensional curved shape.Ī few things around us that are circular in shape are a car tire, a wall clock that tells time, and a lollipop. A circle is a round-shaped figure that has no corners or edges. ![]()
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