tceic.com
>> >>

200915


2009 15-

12009 EF DC DC 2009 EFB65AED A .70 B .65 C .50 D .25

A D B

E D

C

F

C

2 2009 1=301 A160 B150 C70 D60 32009 ABCD E DF AB AEC = 100 D A70 B80 C90 D100 C A E D B

F

42009 m n = 55 = 45 3 1 2 A 80 B 90 C 100 D 110 52009 1 = 30 2 = 50 3 A 50 B 30 C 20 D 15

1 3 2

6 2009 EF AB G 1=2=90 CD H GM HGB CD M3= A60 B65 C70 D130

E
A G 1 H 2 3 M F 7 2009 l1 l 2 , B

C

D

.

A.150

B.140

C.130

D.120 .

82009 ABCD,A=20E=35C A.20B. 35C. 45D.55

92009 B 1 3 A 1 2 C 1 4 D 2 3

2 3 1

4 102009 ABCD l ABCD 1=1302= A40 B50 C130 D140

11 2009 l1 // l2 1=1202=100 3= A20 C50 B40 D60

3 2 1

l1

l2

12 (2009 ) 2AB O CD O BOC = 110 AD OC AOD = A70 B60 C50 D40 D A O B

C 132009 ab c 1 = 4238 2009 2 A13762 B13722 C4762 D4722 14(2009 )AB O CD O BOC = 110 AD OC AOD = A70 B60 C50 D40 D A O B

C

152009 AB CD 1 = 2 A C 1 2 A B D A C 2 B 1 B D C C A 1 2 D C B A 1 D B 2 D

162009 OP AOB PA OA PB OB ABߧ A PA = PB B PO APB C OA = OB D AB OP 172009 ,1=23=80 4= A.80
O O

B. 70
O

O

C. 60

D. 50

O

18 2009 A B C D EF AB CD G H AGE = 60 EHD B 60 A 30 C 120 D 150 192009 1 ACEDC=26CBE=37BED ( )? A63 B83 C73 D53?

202009 A 1 2 B 1 3 C 1 4 D 2 3

2 3 4 1

21 2009 AB CD EF AB EEF CD F 1 = 60 2 = A20 B60 C30 D45

1 C 2

F D

A

E

B

22(2009 ) ABCD OOE COB ) EOB55?BOD A35? B55? D110?

C70?

232009 30( ) A30 B60 C90

D150

24(2009 ) Rt ABC ACB = 90 DE C DE AB ACD = 55 B A35 B45 C55 D65

A D C

B E

25 2009 c ab A 1 = 2 B 1 = 3 D 1 = 5 C 1 = 4 c 1 2 5 3 4



a b

262009 ABCD EF A AEF = 1 = 50 A110 B115 C120 D130 B

E

D 1 F C

27 (2009 ) AB CD A = 20 E = 35 C A20 B35 C45 D55 E A F C D B

282009 a b c a b 1 702 ( ) A70 B20 C110 D50

292009 AB O O OC OCOD OD AOC=30o BOD A60o B120o C60o 90o D60o 120o

30 2009 ab c
1 2

c a b
o

A 1 = 2 a b B a b 1 = 2 C a b 1 + 2 = 90

D a b 1 + 2 = 180

o

A 12009 A = 75



2 2009 ADBCBD ABC A = 110 D =
A D





B

C

3(2009 )ABCD EF ABCD EF147 2 ______

4(2009 ) 66_________ 52009 AB CD BBE ABD CBE

A E C D

B

6(2009 )ABCDACBCBAC65BCD______________

72009 l a,b ab1=70 1 = 70 2
o

_________ l 1 a 2 b

8 2009 AB//CD,CE ACD 1=25 2 .

0

9 2009 AB CD ABE66 D 54 E _______________

10 2009 AB CD BBE ABD CBE A E C D

B

112009 AB//CD AD AC ADC = 32 CAB .

1 122009 l1 l2 1 = 120 2 =_______________

l1

13 2009



2 5 a b c

l2

a b1 = 120 2 =
c a 1 2 5 b

142009 ABCDA =



A

B D

C

80o

152009 2 ABCD EF ABCD EF 1=462= E A 2 C 16 2009 AB CD 1=50 2= 2 A C 17 2009 5 a b c 1 2 B D 1 F D B

a b1 = 120 2 = _____

182009 AB//CD, EF ABCD EF EP AEF, F FPEP, PPEF=30 0 ,PFC=__________ A P C 300 F D E B

192009 AB CD1 = 50 2 = 110 3 = A 13 2 B



C

D

20 2009 ABC= 212009 1 AB ED B = 58 C = 35 D ________ A E C B D

22 2009 AE // BD 1=130o2=30o C=



ABCDBAC ACD EAEC
A E C D B

242009 ABCDBAC ACD E AEC
A E C D B

252009 a b c ab1=62 3=

262009 ACBDA70B40P= C C D P A B A O D

E



B

27 (2009 ) C AB D BC AB10 AC6 CD_______________ 282009 ABCDBAC ACD E AEC
A E C D B

292009 ABCDBAC ACD E AEC
A E C D B

1 2009 1H: AB 1 O O AB C ACBC O OD BC O D 2 AOB 2 AOB A

A

1

B

O

2

B

C D C

A E B

A

O 1

B

O

D 2

OE
2 2009 10AB O AB=10 DC O CADDC DAD O E1AC BAD 2 sinBEC= DC
3 5

3 (2009 ) A( 3 0)B(3 3 2)02) D 1 0 OC C E 2 A AB B E EF AB BC F DADF t (1)ABC (2) t ABDF (3) AEFD S S t y=x +mx E S<2 3 m ()
2

42009 ɡ





a 6 10 b 9 12 c 5 abc a b c

12 8



8 6

15 7

18

a +c?b = 2
52009 ABCDAE CD CDEAE EA=37? D E C D

A

B


:

200915-....doc

200915-____2009 15- ...

200915 ....doc

200915 >> 2009 15- ...

2009().doc

2009() - www.xsjj

200915..doc

200915. - 1 (2009 ), EF , D,C D...

200915-[1].doc

200915-[1]____2009 15- ...

15 -.doc

15 -___ 15- 1(2009 )...

.doc

- 1(2009 ), EF ,...

...15-_....doc

200915- >> 2009 15-...

201815:.doc

201815: - http://www.kejianyuan.com 1.(2014 , 6 ...

---.doc

--- - 2009 15- 1 (2009 ),...

2009.doc

2009 >> 2009 15- ...

200915-.doc

2009 15- ...

200920-.doc

>> 2009 20- (2009,), l1l2, D A.150...

201419 (....doc

201419 ()___2014 www.czsx.com.cn ...

201519-.doc

201519-___.... : 3=1=70 ,. ...

201021 ()_....doc

201021 () >> 2010 1 (2010 ), ABCD...

2018(18).doc

2018(18) - 2018 : 18 .( 30 ) 1.(2018?),...

2010-.doc

2010-2010->> 2010 1 (2010 ),...

()_....doc

() ...9 7(),ABC ,DEBC,DE ABAC D...

201818().doc

201818() - 2018 : 18 .( 30 ) 1.(2018?)...

|
All rights reserved Powered by www.tceic.com
copyright ©right 2010-2021
zhit325@126.com