import { vec2 } from 'linearly';
/**
 * A circle represented as a tuple of a center and a radius.
 * @category Types
 */
export type Circle = {
    readonly center: vec2;
    readonly radius: number;
};
/**
 * Functions for manipulating circles represented as {@link Circle}.
 * @category Modules
 */
export declare namespace Circle {
    /**
     * Returns the circumscribed circle of the given triangle.
     * @param a The first point of the triangle
     * @param b The second point of the triangle
     * @param c The third point of the triangle
     * @returns The circumscribed circle of the given triangle
     */
    function circumcircle(a: vec2, b: vec2, c: vec2): Circle | null;
}
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