Réponses

2013-12-05T12:03:59+01:00
AB² = 9 + 16 = 25
CH = 8,5 - 3 = 5,5
CA² = 30,25 + 16 = 46,25
AB²  + AC² = 46,25 + 25 = 71,25
et BC² = 72,25 => le triangle n'est pas rectangle.
exercice2.
A = (15 + 7)/12 = 22/12 = 11/6
B = (24 -35)/42 = -11/42
C = (24 + 36)/36 = 69/36 = 23/12