Bài soạn BO HINH VE TOAN 8

TẬP SGK B B A B C C A A a) D D C D b) A c) B B A N P Q B D C B 800 120 C A M D D C C E A 110 B F I x 600 D K x H x a) G b) 650 A D c) P x 650 Q M S x B 4x 2x 950 a) N 3x x Q R b) C 120 C B 1 1 A 750 a) D A b) D P E N 105 x d) M B A A C B cạ n h đá y cạ nh bê n D D cạ n h bê n H C cạ n h đá y E B F C 600 600 G A B D C x y B B A C a) C D 400 800 B y 500 x b) N 750 120 115 H M b) a) A D 750 105 D A A I K c) B A C D C A x 650 D 700 D y B C c) BT 9/ 71 A B A A C B 800 B F 800 100 D D C D a) C G E 110 800 800 b) H O I 70 N Q P 700 M T S d) c) B D C B A K 110 A C D A A A 800 D 400 400 600 B B 600 800 C D C BT 12/ 74 B C D BT 13/ 74 A A B B E D E C F C D B F C A BT 16/ 75 A BT 15/ 75 A D G E D H E B E D C B C BT 18/ 75 BT 17/ 75 A B A B D A C D E C D K A A D E D B A E D F C E F B C B C A B A I E F C C 500 B H BT 24/80 I 5dm P A x K Q 8cm C x H N A y E y H F K C D A BT 28/ 80 E B B I K F C a) D C O A D D I b) F C D B A B K B A F C M BT 25/ 80 BT 27/ 80 D G B E M 16cm E C A B x I E B C N K D K 8cm 500 10cm E M 8cm I 2m D C A x x F D A A 24m D C B B E F E D A B C A y C B B A C C B D O A x D a) c) b) 2cm 3cm 4cm A A B d B x 700 D c) 700 C A' A A A d B C B B' d B C H A' A' B' A B H C C' C' d BT 36/ 87 y C H A B A 500 x O D C K B BT 39/ 88 B A E d D C Hình bình hành , hình chữ nhật ,đường thẳng song song , hình thoi A B 700 110 700 D A A C B C D A B 1 O D GT KL C D 1 C B F E S I N 750 B U V P A C D H a) K b) A 110 M c) X 100 800 Y e) d) E G C BT 45/ 92 BT 44/92 H N A M P E C D A D BT 49/ 93 B E C F A K B B K F H N M O H D D C G D C A A O B F BT 48/ 93 A A B E Q A R Q 700 F B D G C B B O A' O B' C I C' O A' C A B A O B' B A' O C D C' y BT 51/ 96 H -3 O A B x -2 K C BT 54/ 96 x BT 52/96 E B A A B A E I D C F B y O D C C M BT 55/ 96 A M B O D C N A A A B B D D A C D C B M B D C M C BT 59/ 99 a) A B b) A BT 60/99 B B O 7cm D C D C O ? A C 24c m BT61/ 99 A E C C A I B C H A B O B BT 65/ 100 10 A A B 13 H F E B A E x C H F G G D C 15 B D C D A a B h b H A a (I ) b A M H' K' K a' A' B M' a A a A b B b B c C c C d D d D a) 2 h h ( II ) A' h h H K b) C H H' x E E F D G C H A C' D' B BT 70/ 103 x BT 68/ 102 A B A' 2cm B C N M 2cm O C C' D y A BT 71/103 A A E D O P P Q E B H D C M Q O B C HM BT 71/103 A D O P B Q H E C M A P D B B B E Q O A C C HM A B D D F E I K D C a) H C A N G b) c) M ... BT 24 /80 I 5dm P A x K Q 8cm C x H N A y E y H F K C D A BT 28/ 80 E B B I K F C a) D C O A D D I b) F C D B A B K B A F C M BT 25/ 80 BT 27/ 80 D G B E M 16cm E C A B x I E B C N K D K 8cm 500... A C a) C D 400 80 0 B y 500 x b) N 750 120 115 H M b) a) A D 750 105 D A A I K c) B A C D C A x 650 D 700 D y B C c) BT 9/ 71 A B A A C B 80 0 B F 80 0 100 D D C D a) C G E 110 80 0 80 0 b) H O I 70... A M N D N BT 32/1 28 B A B B d C A C b) a) E A A C F D H BT 35/129 G B B F D A O C D BT 36/129 B O A C D F E a) C D BT 34/1 28 B B d C D b) a) A A D D E C G H BT 32/1 28 BT 33/1 28 B M C G D E A B