2020-2021学年四川省眉山市仁寿县九年级(上)期末数学试卷

学年四省眉山市寿县九年第一学期末数学试卷一选题共12个小题每题4分共48分）A0

xB2Cx

A

B

C

Dax

210aAa1aaD10x2+31A2B2D3xA252

16

B12C16x

25

D11

]16ABB30mi12.5A75m50mC30mD12mEFGHO

CDEFABFCDEFABFA

B

C

D2

A30

B45

C60

DAax2

B2CD10ABCPABCPABCABAPC

D112

+xBCDA10Aa2ByC03CD4Dx012ABCDADFGeq\o\ac(△,①)AEFCABAFDFDC

121121A1

B2

C3

D二填题本题个题每题4分共分请正答直填答卡应位上1314xxxx1x+1566ABC16217218eq\o\ac(△,Rt)ABCACB90ABBCCDABBDACDE三解题本题8个小，分．1920x+2mx+m2

①②1m

21MBCEM①ABMEMA②4sin2260AOOB23C①②244051①6②25ABCDEADEDBCF①②CEAEBAFFAEtan+tan

eq\o\ac(△,S)PDBeq\o\ac(△,S)PDB262

++ABBO33CDBC

CD①②③P2+9P

1111参考答案一选题共12个小题每题4分共48分）A0

xB2Cxxx2C

A

B

C

DA

3

B

C

D

4

Dax210aAa

Ba10Daaa4+4a0aa020x2+31A2B2D31+x

11xxA252

16

B12C16x

25

D11

]1625x251x251x251x16ABB30mi12.5A75m50mC30mD12mABi1AC12.5303075EFGHO

A

B

C

DABCDEFGH2

A30

B45

C60

DACBCBDAD2BB60BACCAax2

B2CDAy2

Byxy2C

D10ABCPABCPABCA

BAPC

DBABCACPABCBD

ACPBD112

+xBCDA10Aa2ByC03CD4Dx01yxx3xaA

2

23

CDEFABFCDEFABFxyCyx2x3x2

4D4Cxx1x0DD12ABCDADFGeq\o\ac(△,①)AEFCABAFDFDCA1

B2

C3

DABCDADBCADBC90ADBCEACACB90CBABCACAB①DGDGEADADAG②

DEFDFGDAFABFAEFABFCDEFABFCDEFABFDEFDFGDAFABFAEFABFCDEFABFCDEFABFADADBCBCCABFGFGDGDCDF③AEFSS2eq\o\ac(△,S)eq\o\ac(△,)CAB12S2S2eq\o\ac(△,S)④C二填题本题个题每题4分共分请正答直填答卡应位上13

+

12112112112114xxxx1x+x221x+

1566ABCABCBCDeq\o\ac(△,Rt)ABDADBD4

4

162

8

172

yx

yx

1y+12

2yx22yx18eq\o\ac(△,Rt)ABCACB90ABBCCDABBDACDEACBBCCDABDDCDAC

三解题本题8个小，分．19

3+3

20x+2mx+m2

①②1m①2m12

+44②x1+02m0m0221MBCEM①ABMEMA②4sin

①B90EAMAMBEMAMAMEBAMEAMBEAMABMEMA②ABMEMAEBAMeq\o\ac(△,Rt)ABM

sinBAMsin

2260AOOBOCC603045eq\o\ac(△,Rt)OC84

eq\o\ac(△,Rt)OB4

km

23C①②①②9244051①6②①612

121212+203232②4020+2x1200x10x102520251025ABCDEADEDBCF①②CEAEBAFFAEtan+tanABCDBCD

oADEAEDAFE90EFC2

+tan

+

+

eq\o\ac(△,S)PDBeq\o\ac(△,S)PDBABBCADDE1DEaaBCD

oCFAD

AE2

b2

a2b2

aab2

+tan

262

++ABBO33CDBC

CD①②③P2+9P

①3AOA0yx+13x②D