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Thébault's Theorem

Autor:Guillermo Bautista

Téma:Rovnoběžník, Čtverec

Given any parallelogram, construct on its sides four squares external to the parallelogram. The quadrilateral formed by joining the centers of those four squares is a square.

Reference: https://twitter.com/fermatslibrary/status/1645120156194992128

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