2020-2021學年河南省新鄉(xiāng)市七年級(下)期末數(shù)學試卷

學年河南省新鄉(xiāng)七年級（下期末數(shù)學卷一選題共10小題，題3分共30分）A

BC

DA2B+C2+3Dx0AacabByCbaD+b0A①②

B②

C①④

D①④2+14A1B2CDA

B

C

D8013060150xy

ABCD①②③④A①②

B①③

C①②④

D①③④和13cmA6B7CD1210BCMNBCMNE2A2B7C2cm97cm或二填題每題3分共分111x1k12xx

m13

14eq\o\ac(△,Rt)A300180DEC

15ACB90CMDPACDPBPCDBPCDP三解題本題8個小，分75分161217

1①2②3①②4187445819DABDEBCEDE1213040

11112111122221221220xab28x422+8x1x12xxm2114eq\o\ac(△,A)eq\o\ac(△,)CCB2ABCABACABC3CAAAA221MNCBAC112DEP①BCEF②BPD22MNDABCeq\o\ac(△,)DF

23230530122000

參考答案一選題共10小題，題3分共30分）A

BC

DABCDDA2B+C2+3Dx0ABBCDDCAacabByCbaD+b0Ac0bcabc0a

BxCbaD+baA①②

B②

C①④

D①④①60360②90360③④120360①④D2+14A1

B2CD2+141x31x1CA

B

C

Dn+603605

8013060150xyABCDD①②③④A①②

B①③

C①②④

D①③④①②③④和13cmA6B7CD1266cm13cm6+6

cm1313C10BCMNBCMNE2A2B7C2cm97cm或BE2cmMNDEFCEBCBE97MNDEFCEBCBE11cmCE11cmD二填題每題3分共分111x1k1x1kkk1112xx

m

xm33

13

x+6y①x②①6+36y③③②y1y1①x6x14eq\o\ac(△,Rt)A300180DEC

A30CACD3015ACB90CMDPACDPBPCDBPCDP

ACACDB+PBACB45CBCDCDCDB+22.5三解題本題8個小，分75分1612

12x142+1642+16x4x7xx

2①②x12x2x①42+y3171①2②

xx3①②4x1①x42②x13①②44x1x4x1x1874458x5x+8x44x3xx3319DABDEBCEDE1

2130401AD3DE3AE3+212AEADE7AE92ADEAEDBDEA4090DEBCACBAED20xab28x422+8x1x12xxm1

x12

111122211112222122121121

2xm+1x

xx3++1m102114eq\o\ac(△,A)eq\o\ac(△,)CCB2ABCABACABC3CAAAA1eq\o\ac(△,A)eq\o\ac(△,)C2AB3CA1+3

2

14221MNCBAC112DEP①BCEF

②BPD

105

22MNDABCeq\o\ac(△,)DF1①EFD90EFD+ACB180EF②EFD90DEF903060BPD+BAC1052e