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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.
There are many formulas related to a circle. A few basic circle formulas related to circles are given below: Diameter of a Circle ⇒ D = 2 × r, where 'r' is the radius. Circumference of a circle ⇒ C = 2 × π × r, where 'r' is the radius. Area of a circle ⇒ A = π × r 2, where 'r' is the radius.
In taxicab geometry, p = 1. Taxicab circles are squares with sides oriented at a 45° angle to the coordinate axes. While each side would have length using a Euclidean metric, where r is the circle's radius, its length in taxicab geometry is 2r. Thus, a circle's circumference is 8r.
A line that "just touches" the circle as it passes by is called a Tangent. A line that cuts the circle at two points is called a Secant. A line segment that goes from one point to another on the circle's circumference is called a Chord. If it passes through the center it is called a Diameter. And a part of the circumference is called an Arc.
In Maths or Geometry, a circle is a special kind of ellipse in which the eccentricity is zero and the two foci are coincident. A circle is also termed as the locus of the points drawn at an equidistant from the centre. The distance from the centre of the circle to the outer line is its radius. Diameter is the line which divides the circle into ...
What is a Circle in Geometry? The word ‘circle’ is derived from a Greek word that means ‘hoop’ or ‘ring.’ In geometry, a circle is defined as a closed two-dimensional figure in which the set of all the points in the plane is equidistant from a given point called “center.” Never confuse a circle with a polygon.
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1 day ago · A circle is a round plane figure with a boundary (called the circumference) that is equidistant from its center. It is a fundamental object studied in geometry. In order to describe the shape of an object, we give the object appropriate dimensions. For example, a rectangle can be described with its height and width. It is harder to describe the shape of a triangle, since we would require all ...
