# shoelace formula

> English word · Proper noun

## Definitions
1. An algorithm to determine the area of a simple polygon whose vertices are described by their Cartesian coordinates in the plane.

## Etymology
So called because the constant cross-multiplying for the coordinates making up the polygon is analogous to the threading of shoelaces.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/shoelace-formula