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and required to be a positive number. A circle with. r = 0 {\displaystyle r=0} is a degenerate case consisting of a single point. Sector: a region bounded by two radii of equal length with a common centre and either of the two possible arcs, determined by this centre and the endpoints of the radii.
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A circle is a round-shaped figure that has no corners or edges. In geometry, a circle can be defined as a closed shape , two-dimensional shape, curved shape. A few things around us that are circular in shape are a car tire, a wall clock that tells time, and a lollipop.
Radius, Diameter and Circumference. The Radius is the distance from the center outwards. The Diameter goes straight across the circle, through the center. The Circumference is the distance once around the circle. And here is the really cool thing:
A circle is a 2d shape in which all the points in the plane are equidistant from a point which is called the center of the circle. Two circles with equal radii are congruent in nature. The diameter is the longest chord of a circle and it divides the circle into two equal parts.
a continuous curved line, the points of which are always the same distance away from a fixed central point, or the area inside such a line: Colored paper was cut into circles. We sat in a circle. Igor Zakowski/iStock/Getty Images Plus/GettyImages. Fewer examples. The teacher asked us to form a circle and join hands.
The formula for working out the area of a circle is: \ (A = \pi r^2\), where \ (r\) is the radius of the circle. \ (\pi r^2\) means \ (\pi \times r \times r\). Only the \ (r\) is squared. A one...
15 août 2024 · A circle is the set of points in a plane that are equidistant from a given point O. The distance r from the center is called the radius, and the point O is called the center. Twice the radius is known as the diameter d=2r. The angle a circle subtends from its center is a full angle, equal to 360 degrees or 2pi radians.
A circle is a round, two-dimensional shape. All points on the edge of the circle are at the same distance from the center. The radius of a circle is a line from the center of the circle to a point on the side. Mathematicians use the letter for the length of a circle's radius.
