bonjour
AB² = ( 3 + 2 )² + ( - 1 - 0 )² = 5² + ( - 1 )² = 25 + 1 = 26
BC² = ( 5 - 3 )² + ( 4 + 1 )² = 2² + 5 ² = 4 + 25 = 29
CD² = ( 0 - 5 )² + ( 5 - 4 )² = ( - 5 )² + 1 ² = 25 + 1 = 26
AD² = ( 0 + 2 )² + ( 5 - 0 )² = 2² + 5² = 4 + 25 = 29
ABCD est un parallélogramme rectangle