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Albert95
@Albert95
May 2019
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Bonjour qurlq'un peut m'aider pour l'exercice 1 svp?
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blondinetteoceane88
Verified answer
Bonjour
1)
les points F,Pet H sont alignés
les points F,R et G sont alignés
(RP)//(GH)
D'après le théorème de Thalès on a:
FP FR PR
-----=------=-------
FH FG HG
FP 4.2 3.6
-----=-------=------
10 FG 18
FG=4.2*18/3.6
FG=21
La longueur FG mesure 21 cm
2)FG²=21² FH²+HG²=10²+18²
=441 =100+324
=424
d'après le réciproque du théorème de Pythagore le triangle n'est pas rectangle car FG²
≠ FH²+HG²
1 votes
Thanks 1
blondinetteoceane88
c'est 21²=441
blondinetteoceane88
de rien
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Bonjour pouvez voud m'aidez pour cete exercice svp?
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Verified answer
Bonjour1)
les points F,Pet H sont alignés
les points F,R et G sont alignés
(RP)//(GH)
D'après le théorème de Thalès on a:
FP FR PR
-----=------=-------
FH FG HG
FP 4.2 3.6
-----=-------=------
10 FG 18
FG=4.2*18/3.6
FG=21
La longueur FG mesure 21 cm
2)FG²=21² FH²+HG²=10²+18²
=441 =100+324
=424
d'après le réciproque du théorème de Pythagore le triangle n'est pas rectangle car FG²≠ FH²+HG²