bonjour
(AB)² = ( 2 + 6 )² + ( 7 - 3 )² = 8² + 4 ² = 64 + 16 = 80
( BC)² = ( 5 - 2 )² + ( 1 - 7 )² = 3² + ( - 6 )² = 9 + 36 = 45
( CD)² = ( - 3 - 5 )² + ( - 3 - 1 )² = ( - 8 )² + ( - 4 )² = 64 + 16 = 80
(AD)² = ( - 3 + 6 )² + ( - 3 - 3 )² = 3² + ( - 6 )² = 9 + 36 = 45
ABCD est un rectangle