Réponses

2014-02-09T18:15:10+01:00
Bonsoir

BE² = 4.5² - 3.6²
BE² = 7.29
BE = √7.29 = 2.7

BC² = 2.5² + 2.7²
BC² = 6.25 + 7.29 = 13.54
BC = √13.54 ≈3.7

4.5² + 3.7² = 6.1²
20.25 + 13.54 = 37.21
33.79 ≈37.21
ABC n'est pas rectangle