1、 2016-2017 24 25 26 27 28 3 45 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 25 A 5 B 5 C 5 D 25 2 A 4 = -2 B 3 =3 C 2 4 D 3 9=3 3 P x 5 x A B C D 4 y P x 3 P A 3 0 B 0 3 C 3 0 -3 0 D 0 3 0 -3 5 301415926 100 49 0.2 1 7 11 131 3 27 A 2 B 3 C 4 D 5 6 A(x,3) B(2,y) x , ( ) A.x=-2,y=-3; B.x=2,y=3; C.x=-2,y=3;
2、D.x=2,y=-3 7 A(m,n) , B(-m, n ) ( ) A. B. ; C. D. 8 -1 -1 -1 2 3 -1 A 2 2 B 3 2 C 3 3 D 2 3 9 , 45 , 1=20 , 2 ( ) 1 A B F D C E 2 A 30 B.25 C.20 D.15 10 a 2 =9, 3 b =-2, a+b=( ) A. -5 B. -11 C. -5 -11 D. 5 11 11 A B AB A( 2 1) A (3 -1) B B (4 0) B A 9 -1 B 1 0 C 3 1 D 1 2 12 a b c A a b b c a c B a
3、b b c a c C a b b c a c D a b a c b c 13 E AC AB CD A 3= 4 B D= DCE C 1= 2 D D+ 14 1 2 3 4 A 0 B 1 C 2 D 3 15 AB CD CD EF BCE A 1 2 B 2 1 C 1 2 D 2 1 8 3 24 16 3 64 17 A(a,b) ,a b _. 18 ,-2 A, B A 7 , B _. 19 20 3 , , , ( ), ( ), 15 :_. 21 x 2 -16 + 3 y =0, x+ y= _. 22 a+3 2a-15 . 23 ABCD EF 0 . 51
4、24 7 BAP APD 1= 2 E= F. BAP APD ,( ) AB CD, BAP APC. 1= 2 BAP- 1= APC- 2 3= 4 AE PF, E= F.( ) 25 4 16 1 3 2 27 2 - 1 - 1 - 2 2 - 3 - 8 - - 3 - 3 3 2 (3)( x -1) 2 =4 (4) 3x 3 =-81 26 8 , ABC 1 . 1 ABC x 3 , y 2 A B C A B C A B C 2 A B C A _,_ B _,_ A B C D E F 1 C _,_ 3 ABC 27 8 EF AD AD BC CE BCF DAC 120 ACF 20 FEC 28 12 1 A(a,0) B(b,0), C(-1,2), 2 a + 2 4 - b =0 (1) a,b (2) M COM = 2 1 ABC M 3 2 C CD y y D P CD OP OE AOP OF OE. P DOE OPD 1 2 A B C E F D
