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Xonna
@Xonna
April 2019
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Bonjour pouvez vous m'aidez svp. je sais qu'il faut utiliser le Théorème de Thalés mais il me manque les longueurs de AH, AS, et AM
TM parallèle à HS
HT et MS sécante en A
AT = 7,5
TM = 5
HS = 7
MS = 2
Je dois calculer le périmètre du triangle ASH
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Verified answer
Bonjour,
calcul AH :
thales (HS)//(TM)
AT/AH
= AM/MS =
TM/HS
7,5/AH = 5/7
5*AH = 7,5*7
5AH = 52,5
AH = 10,5cm
on calcule AM :
AM/AS = TM/HS
Am/(AM+2) = TM/HS
AM/(AM+2) = 5/7
7*AM = 5(AM+2)
7AM = 5AM+10
7AM-5AM = 10
2AM = 10
AM = 5
AH =10,5
HS = 7
AS = 7
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Verified answer
Bonjour,calcul AH :
thales (HS)//(TM)
AT/AH = AM/MS = TM/HS
7,5/AH = 5/7
5*AH = 7,5*7
5AH = 52,5
AH = 10,5cm
on calcule AM :
AM/AS = TM/HS
Am/(AM+2) = TM/HS
AM/(AM+2) = 5/7
7*AM = 5(AM+2)
7AM = 5AM+10
7AM-5AM = 10
2AM = 10
AM = 5
AH =10,5
HS = 7
AS = 7