import type { ReadonlyVec } from "@thi.ng/vectors";
/**
 * Interprets given points as closed 2D polygon and computes its signed
 * area. If result is negative, the polygon is clockwise.
 *
 * @param pts - points
 */
export declare const polyArea2: (pts: ReadonlyVec[]) => number;
export declare const triArea2: import("@thi.ng/api").FnU3<ReadonlyVec, number>;
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