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Kamihate
@Kamihate
April 2019
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Devoir facile de math merci (voir photo)
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minimissdu78
Calculons EF:
- BD et CD sont sécantes en D
- B et E appartiennes à BD distincts de D
- C et F appartiennes à CD distincts de D
-(EF) parallèles à (BC)
D'après le théorème de Thalès on a:
DE/DB DF/DC EF/BC
DE/DB = EF/BC ⇔2/3 EF/4.5
EF= 2×4.5/3
EF= 27CM
Calculons CD:
DE/DB DF/DC EF/BC
DE/DB DF/DC ⇔ 2/3 3/DC
DC= 2×3/3
DC= 2 cm
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Devoir facile help !!! Il faut mettre ce que je voit et ce que je ressent ( en espagnol) dans un tableau ( voir photo si elle existe) sur le tableau de Picasso ( voir photo) il faut en mettre 5!! Merci!!!
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Lista de comentários
- BD et CD sont sécantes en D
- B et E appartiennes à BD distincts de D
- C et F appartiennes à CD distincts de D
-(EF) parallèles à (BC)
D'après le théorème de Thalès on a:
DE/DB DF/DC EF/BC
DE/DB = EF/BC ⇔2/3 EF/4.5
EF= 2×4.5/3
EF= 27CM
Calculons CD:
DE/DB DF/DC EF/BC
DE/DB DF/DC ⇔ 2/3 3/DC
DC= 2×3/3
DC= 2 cm