# Lagrange's Four-Square Theorem Seen Using Polygons and Lines

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Any natural number can be represented as the sum of the squares of four non-negative integers. For most numbers there are multiple representations. In this Demonstration, the four integers (not squared) may be viewed using three different options.

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Contributed by: Noel Patson (July 2013)

Open content licensed under CC BY-NC-SA

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detailSectionParagraph## Permanent Citation

"Lagrange's Four-Square Theorem Seen Using Polygons and Lines"

http://demonstrations.wolfram.com/LagrangesFourSquareTheoremSeenUsingPolygonsAndLines/

Wolfram Demonstrations Project

Published: July 11 2013