bonjour
selon le th de Pythagore
EF² = Ed² + Df²
Ef² = 6 ² + 9 ²
EF² = 36 + 81 = 117
EF = √117 ≈ 10.8 cm
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bonjour
selon le th de Pythagore
EF² = Ed² + Df²
Ef² = 6 ² + 9 ²
EF² = 36 + 81 = 117
EF = √117 ≈ 10.8 cm