找回密码
 立即注册
查看: 73|回复: 0

??????

[复制链接]

0

主题

0

回帖

56

积分

管理员

积分
56
发表于 2019-9-13 23:46:11 | 显示全部楼层 |阅读模式
???????????

????????(1)

???????

????????,?????ABC??DEF???? ( ) A. AB=DE??B=?E??C=?F B. AC=DF?BC=DE?BA=EF C. AB=EF??A=?E??B=?F D. ?A=?F??B=?E?AC=EF

?????????????????? ? ? ?.????????? B?????????? C?????????? D??????????

???ABC??DEF????AB=DE??A=?D??????????AC=DF??BC=EF???B=?E???C=?F??????ABC??DEF????????? ? A?1?B?2? C?3? D?4? ???????

? ??1?AO???BAC?AB=AC????__________________??????.

B

?1 C D ?2

A

? ?????????????????:_______________________________.

? ??2???ABC???C=90?AD??BAC??????BC?D?BC=16?DC?DB=3?5???D?AB????___________. ???????

???,??AD=AE,AC=AB,?A=40, ?B=35,??EOC???

?.??????1=?2,?3=?4,AB?CD??????????.

B

C

????????(2)

???????

??????????( ) ?.???????????????. B?????????????.

C???????????.D??????????????????. ???ABC??A?B?C???AB=A?B???B=?B?????????????????ABC??A?B?C?????????????( ) A?BC=B?C?B??A=?A? C?AC=A?C? D??C=?C?

???ABC??A?B?C???AB= A?B? ??A=?A???C=?C ? ,???(1)?B=?B??(2)?B??????B????????(3)BC?????B?C????????(4) BC??????BC???????.???????? ( ) A. 1? B. 2? C. 3? D. 4? ???????

???1? ??ABC??ADC??????????AB=AD???BAC=?DAC??BC=DC???????????????????????????????????

//

???2,??ABC??AED??AB=AE?AC=AD???????????____________(?????)

???ABC??AED.

???3???ABC???C=90?AC=BC?AD???CAB? ?BC?D?DE?AB?E??AB=6cm???DEB????________. ???????

????AC=BD?AC?AB?DB?CD??AB?DC????????

B

C

A

?3

?????ABC??BE?CD???AC?AB?????BE?CD????O??AO???BAC???OB=OC??????

C

????????(3)

???????

??????????????????????????( ) A.??????B.???????? C.?????????D.?????????????

???????????????ABC??? ? ?.AB=3?BC=4?AC=8 B?AB=4?BC=3??A=300 C.?A=600??B=450?AB=4D??C=900?AB=6

?????????????5?7?????????????? ? ?A.a<6 ???????

???1,??AB?BD?B,ED?BD?D,AB=CD,BC=DE,??ACE=___________.

A

B.a>1 C.1<a<6

D.1?a?6

D

?

1

???2,??AB?CF,E?DF???,?AB=9cm,CF=5cm,???3?????AOB??OA?OB???OC=OD???AD?BC???P????????AOD??BOC???APC??BPD???P??AOB???????AP=DP.??? ???__________.(???) ???????

?3

???????1=?2??3=?4?AC?BD????O?????BD?AC??????????

B

C

???????ABC?BE?CF???CP=AB?BD=AC????AP?AD?????????????.

C

????????(4)

???????

???ABC??A?B?C????A+?B=?C??B?+?C?=?A???b?a=b?? c?,b+a=b?+c????????? ? ? A??????B???? C???SAS?? D???ASA?? ????????????? ? ? A? ????????????? B???????? C??????45?????3cm???????? D???????????????????????

???1?A?B?C?D????????AB=DC?AE?DF??????????? ?AEC??DFB????A?AE=DFC?EC?BF ???????

B?EC=FBD.?E=?F

? ??2????ABC???C=900??D?AC??DE?AB????E??DC=DE??CBD??A=2?1???A=______.

B

?

3

C

D?2

C

???3?????????ABC??AQ=PQ?PM?AB?PN?AC?PM=PN.?AN=AM??QP?AM???BMP??PNC.??????______________??????

??????????_______________??????????????.?????????????????. ???????

7.????D?E??????ABC???AB?AC?????AD=CE?BE?CD??F???

BFC???.

8.?????ABC??AED??AB=AC?AD=AE???CAB=?DAE. ??CE?BD??????????

????AED???A??????????D?E?B?????????????????????????.

???????????????

1?(2011??)?????????( )

A?m2?16?(m?4)(m?4) B?m2?4m?m(m?4) C?m2?8m?16?(m?4)2D?m2?3m?9?(m?3)2 2?(2011??)????2x2?4x?2??????( )

A?2x(x?2) B?2(x2?2x?1) C?2(x?1)2 D?(2x?2)2 3?(2011??)???? 3x3?6x2y?3xy2???????????( )

A?x(3x?y)(x?3y)B?3x(x2?2xy?y2) C?x(3x?y)2D?3x(x?y)2

4???x?y????2x?x2?x2y2?2??2xy???x?y???( )

A??1 B?0 C?2D?1 5?(2011??)????????????2x2?5x?3????( )

A?2x?1B?2x?3C?x?1 D?x?3

???????

6?(2011??)?????x2?x?______________.

7?(2011??)?m2?n2?6??m?n?2??m?n?________. 8?(2011??)?????16?8(x?y)?(x?y)2?______________. 9?(2011??)?????a3?a2?a?1?______________. ???????

10?(2011??)?????a3?9a.

C

???????2014?????????

????

??????

??___________??____________

??? ?? ______?________? ??_______?? ???? ???? 1?(?144)?(?169)2?

2333

4

?(?945)

????

3?2m2n5p2q5mnp3pq2?4mn2

?3q

4?(

x?2x?2x2x?2?x?2)??4

x2

?????? 5?

4x2

?16?2x?4?x

x?4

???x?3

????? 6?

x?1x?1?1

x

?1

????????? 7????????????????720 t

?????????48 t????????

???????????????????5?????????????????

1

?????

8??????AC???BAD??1=?2????AB=AD

10??ABC???BAC=60??C=40AP???BAC?BC?P?BQ???ABC?AC?Q?AP?BQ???O? ???AB+BP=BQ+AQ?

9???ABC???C=90??B=15?D? AB???DE?AB?D??BC?E??BE=4? ?AC??

2

??? ?? ______?________? ??_______?? ???? ???? 1???1???7???28??

???1?3??

2

?

????

3?a2

?4a?4a2?2a?1?a?1

a2?4

4?(x?1?3x?1)?x?22x?2

??????

x?35

?x2?1?x2?2x?31

x2?2x?1?x?1,

??x??1

????? 6?

1?3x31?3x?x?13x?1?12

1?9x

2

????????? 7?????????????????????????????????3??????????2?????????????

???????????????????

3

?????

8???????E?C???BF??BE=CF?AB?DE??ACB=?F?

????ABC??DEF?

10?????ABC??AD???BAC?

DG?BC???BC?DE?AB?E? DF?AC?F.

?1???BE=CF????

?2???AB= a?AC= b??AE?BE??

B E C F

9????????ABCD??AD?B C??E ?AB???????B=60?AB=BC

?? DEC=60

???AD+AE=BC

4

ABG

CFD

???????????

????????

????????

????

1????????????????????1????.???????????????????????????????????????????????

2?????????????????????Q??????????????????????????????????????????????????

3????????????????????????????????????????????????????????????????????

4????????????????????????????????????????????????????????

???

1????????

2??????????150??????5????????????????????????????????????????????????????????????

3?????????????????2??

??????????????????????????????800?????????????

??????????????????????????????????????

????????????????????????????????????????????????????????????????????????110????????????????????????????????????????????????????????????????????? ?????

???????????

1?????????20??????4???? 2????????

3???????????????1???????????

1?????????????????????????????????????2??????????

3??????????????????????????????

4???????????????????????????????????

5???????????????6???????????????"????"

7?????????????????????????????????????????????

8?????????????

9???????????????

10?????????????????

11????????-??????????-????

12??????????????????

13????????????????

14?????>>:"?????????"????:"?????????"

15??????????

16?????????????????????

17???????????

18?????????????

19????????????????

20??????????????

21??????????????????????

22?????????????

23?????????

24?????????????????

25???????????

26????????????????

27?????????

28????"?????????????????????????????????"

29???????????????????????

30???????????????????

31???????????????????????????

32??????????????????????

33??????????????????????????

34?????????????????????????????????

35???????????????????????

36????????????? 37???????????????????????????

38?????????????

39?????????????????????


???????????????
?????http://www.850500.com/news/2532.html
?????,??!
您需要登录后才可以回帖 登录 | 立即注册

本版积分规则

Archiver|手机版|小黑屋|Discuz! X

GMT+8, 2026-3-12 15:53 , Processed in 1.503493 second(s), 19 queries .

Powered by Discuz! X3.5

© 2001-2025 Discuz! Team.

快速回复 返回顶部 返回列表