bonjour
(AB)² = ( 6 - 2 )² + ( - 3 + 1 )² = 4 ² + ( - 2 )² = 16 + 4 = 20
( BC)² = ( - 1 - 6 )² + ( - 7 + 3 )² = ( - 7 )² + ( - 4 )² = 49 + 16 = 65
(AC )² = ( - 1 - 2 ) ² + ( - 7 + 1 )² = ( - 3 )² + ( - 6 )² = 9 + 36 = 45
45 + 25 = 65 donc rectangle en A
(AB)² = ( 1 + 1 )² + 0 = 2 ² = 4
( BC)² = (0 - 1 )² + ( √3 )² = ( - 1 )² + ( √3) ² = 1 + 3 = 4
( AC² ) = ( 0 + 1 )² + ( √3 )² = 1 ² + ( √3 )² = 1 + 3 = 4
il est équilatéral
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bonjour
(AB)² = ( 6 - 2 )² + ( - 3 + 1 )² = 4 ² + ( - 2 )² = 16 + 4 = 20
( BC)² = ( - 1 - 6 )² + ( - 7 + 3 )² = ( - 7 )² + ( - 4 )² = 49 + 16 = 65
(AC )² = ( - 1 - 2 ) ² + ( - 7 + 1 )² = ( - 3 )² + ( - 6 )² = 9 + 36 = 45
45 + 25 = 65 donc rectangle en A
(AB)² = ( 1 + 1 )² + 0 = 2 ² = 4
( BC)² = (0 - 1 )² + ( √3 )² = ( - 1 )² + ( √3) ² = 1 + 3 = 4
( AC² ) = ( 0 + 1 )² + ( √3 )² = 1 ² + ( √3 )² = 1 + 3 = 4
il est équilatéral