In 1937, the French mathematician Victor Thébault (1882–1960) discovered that if you construct squares on the sides of any parallelogram, their centers form another square when connected.

1937年，法國數(shù)學(xué)家維克多·泰博（Victor Thébault，1882-1960）發(fā)現(xiàn)在任何平行四邊形的邊上構(gòu)造正方形，它們的中心在連接時(shí)會形成另一個(gè)正方形。