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Sagot :

VINS

bonsoir

AC = x

BC = x +  2

AB =  x  - 7

si  x =  15 cm

( x + 2 )² =  x ² + ( x- 7)²

17² = 15 ² + 8 ²

289 = 225 + 64

289  = 289

donc il est rectangle

x + x + 2 + x - 7 = 70

3 x = 70 - 2 + 7

3 x = 75

x =  25

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