Devoir+de+synthèse+n°1++ +math+-+8ème+(2010-2011)+mr+arfaoui+khaled
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Devoir+de+synthèse+n°1++ +math+-+8ème+(2010-2011)+mr+arfaoui+khaled

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Devoir+de+synthèse+n°1++ +math+-+8ème+(2010-2011)+mr+arfaoui+khaled Devoir+de+synthèse+n°1++ +math+-+8ème+(2010-2011)+mr+arfaoui+khaled Document Transcript

  • 7 2010 8 01 87 11 7 9 4 8 4 1 B(  5 3 ; 2) A( 197122908 1 2 1 x x 3 2 1 6 5 ; 2) 3 1 0 2  1 6 (O, I , J ) 3 (OI ) (OJ ) ˆ BAC 01 ˆ A ABC  50 130 O ABC 4 50 80 4 02 1 a 135 1 135 2   ( ) 111 3 111 5 2 5 7 3 b  0,35  (1  )  (  ) 2 20 2 6 y x 2 7 1  ( x  y  )  ( x  y)  5 5 2 1 A x 2 10 x A 3 2 A x 3 03 A x 1 2 3
  • 6 ˆ BEC  40 ˆ xAB  80 04 ( xy ) //( BE ) ˆ CBE 1 ˆ BCE ˆ CEt  60 D Ay  Et  2 ( Et ) //( AB ) ˆ A DE 3
  • 12 2009 7 01 87 11 7 11 4 01 10000 10 10 7 10 1108 608 () 3cm ˆ yO z ˆ xO y 70 110 3 3cm ˆ xOy  70 ˆ yO z 4 2 598 ( ) 3cm 10 1 254  x  852 x 3cm 5 3 4 20 5 02 1 d  17 0 c 1 27 b2 5 a  25  10  (7  5)  145 2 z  81 3 7 7 x  49 y 5 5 4 y x 03 A  2(5 x  y )  x  9 y A  11x  11y 1
  • x  y  100 A 7 ˆ xO y OA A ( ) OA  3cm 2 04 1 Ox  A ( ) (Oy ) ˆ AOE  40 ( ) E 2 ˆ yO E (OE ) A E ( ) ˆ EOF (OF ) 3 ( ) (OE ) ˆ AOF  40 H A 4 F Ox  K AH  AK