2020-2021学年河南省洛阳市伊川县八年级(下)期末数学试卷

222学年河省洛阳市川县八年（下）期数学试卷一选题共10小题，题3分共30分）A2

0xB0CD0.00020.0002A0.210

B0.210

C2

D4ABCDBEDA15

B35

C45

D55020.45220.5520.60A

B

C

D

x1BxA1B11

Cx0x1D1xABCDBB244BA66

B104

C

DOABC040AOC60EA2

B2

C

D5名

A3510kx+b

B364C3D360A

B

C

D二填题每题3分，分11

x12yk0Q24Py13ABCDOAOBAB5AD

1480

15ABCD8MNCDPBDPN三解题本题8个小，分75分16

+13

1724027018ABCDBADBDOBD

191

2.53

1220ABCD沿ACBECADF1AEF2AB4BC821kx+xA40yB01b2PCPCODP

22ABCDEACEDCF1DBCF223EFBCAECFDCGHBD1ABE2DGBEDF

参考答案一选题每题3分，分A2

0xB0CDx2x2x2

00.00020.0002A0.210

3

B0.210

C2

D42DABCDAADADABCDBBADBCDBAD+ABCABC180ADBCABDCABCDCBDDOCODOB

222ABCDCBEDA15

B35

C45

D55ABCDABADBAD90ABEAEBAEAEB60ADAEDAE+90150AED15015BEDAEBAED15C020.45220.5520.60A

B

C

DS20.450.50S20.55Ss2s2s

x1Bx

12121A1Cx0x1

B1xD1xyBx1xyyCABCDBB244BA66

B104

C

DABCDBACBACBAC1B1804422114COABC040AOC60E

A2

B2

C

DExF40OA

EFOFAOAF43D

5名

A35B4C3D363733736[3737+23737]

410kx+bkbA

B

C

DAy+0by0By+kb0BCkxkbkb0CDkx+b00D二填题每题3分，分11

x

x2y

x2x2xx12yk0Q24Py

y2y42yk28y

y13ABCDOAOBAB5AD

ABCDBD2BOAOAOBABOAD5

1480

908715ABCD8MNCDPBDPN

MBDNQPMP+NPACABCDBDQBPMBPQMQBDMQMCDABCDBQCDBQNCABCDACeq\o\ac(△,Rt)BPC5MPNP5三解题本题8个小，分75分16

+13

1+45

17240270/1.5x

x60x601.560/90/18ABCDBADBDOBDADABD30BDAO2AO2cmeq\o\ac(△,Rt)AOB

2

cm191

2.53

121152+2.52+52+9+1315333215320ABCD沿ACBECADF1AEF2AB4BC81D90ABCDEEBAEDAEFCDF

AEAECDF24BCBC8CDAB4CDFCFDFeq\o\ac(△,Rt)DF2+2CF2DF28DFDF3Seq\o\ac(△,S)21kx+xA40yB01b2PCPCODP1A0ykx2y

x+2

+2PCOD

PDa|+2|422ABCDEACEDCF1DBCF2DACDEBCBCDEDF2DEDFDBCF2DEDEDACDEBCDE23