what is the figure of the circle
Answers
Answer:
A circle is a plane figure bounded by one curved line, and such that all straight lines drawn from a certain point within it to the bounding line, are equal. The bounding line is called its circumference and the point, its centre.
Answer:
A circle is a two-dimensional figure and it can also be referred to as a plane figure.
A circle is a plane figure bounded by one curved line, and such that all straight lines drawn from a certain point within it to the bounding line, are equal. The bounding line is called its circumference and the point, its centre.
Step-by-step explanation:
A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre; equivalently it is the curve traced out by a point that moves in a plane so that its distance from a given point is constant. The distance between any point of the circle and the centre is called the radius. Usually, the radius is required to be a positive number (Circle with {\displaystyle r=0}r=0 is a degenerate case). This article is about circles in Euclidean geometry, and, in particular, the Euclidean plane, except where otherwise noted.
A circle (black), which is measured by its circumference (C), diameter (D) in blue, and radius (R) in red; its centre (O) is in green.
Type Conic section
Symmetry group O(2)
Area πR2
Perimeter C = 2πR
Specifically, a circle is a simple closed curve that divides the plane into two regions: an interior and an exterior. In everyday use, the term "circle" may be used interchangeably to refer to either the boundary of the figure, or to the whole figure including its interior; in strict technical usage, the circle is only the boundary and the whole figure is called a disc.
A circle may also be defined as a special kind of ellipse in which the two foci are coincident, the eccentricity is 0, and the semi-major and semi-minor axes are equal; or the two-dimensional shape enclosing the most area per unit perimeter squared, using calculus of variations.
