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lemeretjeanpi
@lemeretjeanpi
January 2021
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pouvez vous m'aider pour cet exercice en me détaillant les réponses merci
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trudelmichel
Verified answer
Bonjour,
triangle rectangle AED
ED²=AE²+AD²
AE²=ED²-AD²
AE²=6.5²-6²
AE²=42.25-36
AE²=6.25
AE=2.5
BE=AB-AE
BE=6-2.5
BE=3.5
Triangle rectangle EBF
EF²=EB²+BF²
EF²=1.5²+3.5²
EF²=2.25+12.25
EF²=14.5
EF=racine((14.5) soit 3.8 arrondi
Triangle rectangle DFC
DF²=FC²+DC²
FC=BC-BF
FC=6-1.5
FC=4.5
DF²=6²+4.5²
DF²=36+20.25
DF²=56.25
DF=7.5
DF²=56.25
EF²=14.5
ED²=6.5²=42.25
EF²+ED²=14.5+42.25=56.75
DF²=56.25
EF²+ED²<>DF²
Le triangle DEF n'est pas rectangle
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Verified answer
Bonjour,triangle rectangle AED
ED²=AE²+AD²
AE²=ED²-AD²
AE²=6.5²-6²
AE²=42.25-36
AE²=6.25
AE=2.5
BE=AB-AE
BE=6-2.5
BE=3.5
Triangle rectangle EBF
EF²=EB²+BF²
EF²=1.5²+3.5²
EF²=2.25+12.25
EF²=14.5
EF=racine((14.5) soit 3.8 arrondi
Triangle rectangle DFC
DF²=FC²+DC²
FC=BC-BF
FC=6-1.5
FC=4.5
DF²=6²+4.5²
DF²=36+20.25
DF²=56.25
DF=7.5
DF²=56.25
EF²=14.5
ED²=6.5²=42.25
EF²+ED²=14.5+42.25=56.75
DF²=56.25
EF²+ED²<>DF²
Le triangle DEF n'est pas rectangle