ghadir 1

Exercice1:Ladroite(AB)coupelesdroitesparallèles(D)et(D’)Exercice2: ABC un triangle isocèleen
A
.
M
Le milieu 
enAetB.Et ˆ
B
= 45.de[]
B
C.LepointDest le symétrique du point
A
par 
Calculerlesmesuresdesangles:1
ˆ
A, 2
ˆ
Aet 3
ˆ
Ajustifier. rapport au point
M
.
6 1
ˆ
A= 
+ 
5 
2
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A=2)montrerqueABDC estunlosange 
…………………………………………………………………………………………… 
…………………………………………………………………………………………… 
 3
ˆ
A=………………………………………………………………………………………….. 
……………………………………………………………………………………………
………………………………………………………………………………………….. 
Exercice3:uncercledecentreetderayon2cmet
A
B……………………………………………….………………………………………… 
sondiamètre
latangenteducercleaupoint A.………………………………………………………………………………………….. 
D
latangenteducercleaupoint
B
.………………………………………………………………………………………….. 
……………………………………………………………………………………………
1) Construirelafigure
Exercice4: ABCDuncarrédecentre O.
1) Construirelafigure
5
+
4
2) Montrerque
D
A
Bet
A
B2)montrerqueletriangle AOB est un triangle rectangle
………………………………………………………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………..………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………..………………………………………………………………………………………………
……………………………………………………………………………………………..………………………………………………………………………………………………
3) Endéduireque
D
//
3)montrerqueAC=BD
………………………………………………………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………..………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………… ……………………………………………………………………………………………..
1) Construirelafigure
CollègeOmarbenkhattabDevoirsurveillén°2semestre Ⅱ Niveau:1èreannéeinternational
Prof:Imadchaouchi
Classe:1APIC/1N°:……….Nometprénom:……………………………………………....26/04/2019durée:1heure