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Intello564
@Intello564
April 2019
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Bonsoir à tous, pouvez vous m'aider svp ?
KLM est un triangle tel que : KL = 2^11 cm; LM = ^154 cm; KM = 3^22 cm.
Démontrez que le triangle est rectangle. ^ = racine carré
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maudmarine
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KLM est un triangle tel que : KL = 2√11 cm; LM = √154 cm; KM = 3√22 cm.
Démontrez que le triangle est rectangle.
KL² = (2√11)²
KL = 4 x 11
KL = 44
LM² = (√154)²
LM = 154
KM² = (3√22)²
KM = 9 x 22
KM = 198
198 = 44 + 154
Soit KM² = KL² + LM²
D"après la réciproque du théorème de Pythagore, le triangle KLM est donc rectangle en L
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Verified answer
KLM est un triangle tel que : KL = 2√11 cm; LM = √154 cm; KM = 3√22 cm.Démontrez que le triangle est rectangle.
KL² = (2√11)²
KL = 4 x 11
KL = 44
LM² = (√154)²
LM = 154
KM² = (3√22)²
KM = 9 x 22
KM = 198
198 = 44 + 154
Soit KM² = KL² + LM²
D"après la réciproque du théorème de Pythagore, le triangle KLM est donc rectangle en L