# Circle PNG Transparent Images

Download top and best high-quality free Circle PNG Transparent Images backgrounds available in various sizes. To view the full PNG size resolution click on any of the below image thumbnail.

License Info: Creative Commons 4.0 BY-NC

Submitted by on Jul 9, 2022

A circle is the curve sketched out by a point moving in a plane so that its distance from a given point is constant; alternatively, it is the shape formed by all points in a plane that are at a set distance from a given point, the centre. The radius is the distance between any point on the circle and the center. Except when otherwise specified, this article is about circles in Euclidean geometry, specifically the Euclidean plane.

A circle, in particular, is a closed curve that splits the plane into two regions: inner and 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 and the eccentricity is 0, or the two-dimensional shape enclosing the most area per unit perimeter squared, using calculus of variations.

The term circle comes from the Greek o/ (kirkos/kuklos), which is a metathesis of the Homeric Greek (krikos), which means “hoop” or “ring.” The words circus and circuit have a tight relationship in their origins.