2022-2023学年上海市崇明县名校数学八年级上册期末质量检测试题含解析

《2022-2023学年上海市崇明县名校数学八年级上册期末质量检测试题含解析》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

2022-2023
ᦪᔁ⚗1.ᔁὃḄஹὃ!ᑏᙠ⚪ᓱ஺2.'⌱)⚪*⌱+,-⚪ᫀ/ᵨ123⚪ᓱ45⚪6Ḅᫀ᪗89᝞◤ᦋ=ᵨ>?@AB/C⌱8ᐸEᫀ᪗஺'F⌱)⚪*ᫀᑏᙠ⚪ᓱᑏᙠGᔁHᦔ஺3.ὃJK/GᔁL⚪ᓱMNO'஺Mஹ⌱)⚪P,⚪4ᑖᐳ48ᑖS1.TᑡVWXYḄZA.a3«a2=a6B.-2a2
3=-8a6C.a+b
2=a2+b2D.2a+3a=5a22.᝞[XABCgADEF,\5E=5,CF=2,ᑣ3FḄ_`PS3.abcdᙠefᑁhiMᩩ_4000kḄl⍝`nopqrb4Os⌼ᡂḄvwrb*“……”i{▭,ᜩhil⍝xkᑣ~c"-=20,᪷x-12x⚪ᵨ“……”⊤ḄᜫḄᩩ5⊡`PSA.,ᜩVᑜhi12kJ20ᜩᡂB.,ᜩVᑜqhi12kJ20ᜩᡂC.,ᜩVᑜhi12kJ20ᜩᡂD.,ᜩVᑜqhi12kJ20ᜩᡂ4.Tᑡ⚪Ḅ⌮⚪`Ꮇ⚪ḄZPSA.᝞Mᐗc஻+¡+஺=0஺஺0
¢ᨵ{ᦪ᪷¤¥4ac<0.B.¦§ᚖ©ªᑖ¦«M¬ᑮ®ᩩ¦§¯°±¬Ḅ²³´µ.C.᝞¯°ᦪ´µ¤¥E·Ḅª´µ.D.©¸¹¸º¯ᩩ©¸»ḄªLµ¼½»Ḅª.5.᝞[▢v¿ᑖÀÁḄ¬Ḅᙶ᪗~ÃZPS

1A.(6,2)B.(-5,3)C.(-3,5)D.(4,-3)6.᝞ᙠAABCAB=AC,BC=10,SABC=60,AD_1_BCD,EFᚖAᑖAB,ABE,ACF,ᙠEFP,PB+PDᨬᑣᨬ!()A.10B.11C.12D.137.᝞ᙠNAOBḄ%&ᑖ'(OM=ON,)ᑖ'*MஹN,OAஹOBḄᚖ-!P,./-OP,ᑣOPᑖNAOBḄ012()C.AASD.SSS8.ᙠᙽ஺5⚕Ḅ7ᵪ9:᝞;10<9:⌕ᵨ/@ᜩBᡂD᝞;E9:FG,⌕H10<9:IJ3ᜩBᡂE9:FḄG,ᦔ᳛2

2B.1.414C.V2D.11.᝞[3AA8CÄᱏÆDEᢚÈɬAÊᙠË»º3cOEᑁ¿*ᑣNAÌZ1+Z2ÍÎᨵMÏᦪoᐵÑÒÓÔᢝÖ×ḼÙMÙ®°ÚÛÜÝÞḄÚÛZ()A.4+N2=24Z1+Z2=ZANA=2(N1+N2)N1+N2=-NA212.Tᑡ[ºZß4à[ºḄZ(eBFfஹ!â⚪(,⚪4ᑖᐳ24ᑖ)13.ä¬M(a,-1)̬N(2,b)ᐵ¼yß4àåUa+bḄæZ14.ä4ç+/nr+9ZM°ᐰªéᑣmḄæZ.15.4Ḅª᪷Z.16.᝞[êºÄᱏABC஺AB=8,BC=6,¬PᙠBC»
ACDPDPᢚȬ஺ÊᙠEᜐPEஹOEᑖìO¼¬஺ஹF,OP=OF,ᑣAE_`17.᝞[ᙠR3ABCZC=90°,ZB=30°,»A8Ḅᚖ©ªᑖ¦QEO43¼¬E,OBC¼¬D,CD=3,ᑣBCḄ_`18.᝞[-íḄ᱄ïᙠ▾ñḄòó┑õM°ö÷óøᦪ¸ùú®᪵üḄý

3Z______¹ஹÿ⚪ᐳ78ᑖ19.8ᑖ᝞জy=-2x+4xஹyᑖAஹC,஺4ஹ0Cᙠ▲ᑁ!"OABC.1
#4ஹCḄᙶ᪗'2
(A5C)ᢚ+,AḄC-ᔠᢚ/஺#Ḅ0᪆2ঝ;3
ᙠᙶ᪗5☢ᑁ7ᔲ9ᙠ:◀3᜜+,ABCᐰ>?@9ᙠA#BᡠᨵEᔠᩩGḄPḄᙶ᪗'@H9ᙠAIJᳮᵫ.20.8ᑖa,b,c7AABCḄNOPQ+S=10஻+V-41,Xc7AABCYᨬḄ#cḄ[\^.21.8ᑖ_2ᑖ01
16X4-12
3ax2+6axy+3ay222.10ᑖA⚔>ῪRtAABC,>ῪRtAADE,ᐸYZBAC=ZDAE=9Q0,᝞1ᡠcde+,f-ᔠgh30ஹCE.<'B1

4(1)jᑨl89ஹCEḄᦪnᐵpqIJᳮᵫ'(2)rBOCE:j#N5ECḄsᦪ'(3)tuv>ῪfNf"ᢥ᝞2de(1)ஹ(2)YḄxy7ᔲzᡂ|?AIJᳮᵫ.24.(10ᑖ)~᝞ᙠ!"A8CDYAB=CD^3cm,AD=BC=5cm,P8Blc஻?Ḅs8c!ᔣᔣC஺CB2cmḄs8-D4-ABᔣ3P,஺BP,஺PḄf.Aᑡ⚪~(1)Aᵨ/Ḅ2⊤ACPQḄ☢S,qhᑏBrḄ[\^.(2)7ᔲ9ᙠvr\+,AABP¡AC஺஺ᐰ>?@9ᙠA#BᡠᨵOPᩩGḄr\'@H9ᙠAIJᳮᵫ.25.(12ᑖ)ᐜᓄ¤¥#\~fl-N¦ᓝ¨?ᐸY8=8-2,¥⌱[vIx+2)x+3ᔠ〉Ḅᦪ«ᐭ#\.26.᝞A(—2,4)6(4,2),C(2,-l),N.

5(1),AABCᐵxQḄMB|Gᑏ஺ᐵxQḄGḄᙶ᪗D(2)P!xQᙠ/V5ḄᕜᨬḄPᑏPḄᙶ᪗(ᶇ,).ὃᫀஹ⌱⚪(⚪4ᑖᐳ48ᑖ)1ஹBூ᪆௃A⌱⚗┯,RZB⌱⚗DC⌱⚗┯(a+b)2=a2+2ab+b2
D⌱⚗┯2a+3a=5a.ᦑ⌱B.¡¢£¤5¥¢(1)(஻)m=amn,(2)a'n-an=am+n,(3)(a±Z»)2=a2±2ab+b2.2ஹCூᑖ᪆௃᪷1ᐰ¨©ªḄ«&¬¨ᑮBC=EF,ᦑBF=CE,ᯠ¯°±ᓽ³.ூ´௃VAABC^ADEF,BC=EF,VBF=BC-FC,CE=FE-FC,.\BF=CE,VBE=1,CF=2,.\CF=BE-CE-BF,BP2=1-2BF.

6ᦑ⌱C.ூ¡௃µ⚪ὃ·Ḅ2ᐰ¨©ªḄឋ¹º»ᐰ¨©ªḄ«&¬¨2⚪Ḅᐵ¼.3ஹCூᑖ᪆௃ᵫ¾Ḅᑖ¥¿À³ÁᜫḄᩩÄ!¢ᜩHÅ°ᑜÇÈÉ12ÊË;IJ20ᜩBᡂ.⚪.ூ´௃¢•••ᑭᵨG,Îᑡ¿À¢ᙶM—Ð=20,x-12x.•.ÁᜫḄᩩÄ!¢ᜩHÅ°ᑜÇÈÉ12ÊË;IJ20ᜩBᡂ.ᦑ⌱¢C.ூ¡௃µ⚪ὃ·ÑᵫÒ▭Ô⚪ÕWᑖ¥¿ÀᵫᑡḄᑖ¥¿À⚪ÖÁᜫḄᩩÄ2⚪Ḅᐵ¼.4ஹCூᑖ᪆௃ᑖ'ᑏᔜ×⚪Ḅ⌮×⚪ᯠ¯ᑨÚᓽ³.ூ´௃Aஹ⌮×⚪!¢᝞;ᐗÜ¿Àox2+bx+c=0(aw஺)஺2-4ac<0ÝÞßᨵÒᦪ᪷2á×⚪D3ஹ⌮×⚪!¢ᑮ-âRS¬¨Ḅᙠ-âḄᚖᑖ-2á×⚪D஺ஹ⌮×⚪!¢᝞;%ᦪḄ¿¬¨ÝÞ%ᦪ¬¨┯ã!%ᦪä³]2å!¬æᦪ2Ꮇ×⚪D஺ஹ⌮×⚪!¢᝞;©ªḄ%&Ḅ¿è¨U©&Ḅ¿ÝÞ©ª2ª©ª2á×⚪.ᦑ⌱¢C.ூ¡௃ὃ·Ñ×⚪éᳮḄOê⚪Ḅᐵ¼2Ñ᝞ëᑏ×⚪Ḅ⌮×⚪ìí\ᜧ.5ஹDூᑖ᪆௃᪷1ᙶ᪗ï³▢ñòᑖóôḄᙠUVW▲)õᫀᓽ³.ூ´௃▢ñòᑖóôḄᙠUVW▲Aஹ(6,2)ᙠUW▲ᦑ⌱⚗┯DBஹ(-5,3)ᙠU÷W▲ᦑ⌱⚗┯DCஹ(-3,-5)ᙠU©W▲ᦑ⌱⚗┯D

7Dஹ(4,-3)ᙠUVW▲ᦑ⌱⚗Dᦑ⌱¢D.ூ¡௃µ⚪ø⌕ὃ·ÑḄᙶ᪗ᐵ¼2º»VW▲ᑁḄᙶ᪗ùú.6ஹCூᑖ᪆௃᪷1©ªḄ☢ü5¥ᓽ³ᑮAOḄí)ᵫᨬýþÿḄ
⚪8+஺Ḅᨬᓽ40Ḅ.ூ௃VAB=AC,BC=10,S."c=60AD±BC:.AD=12TE/ᚖᑖAB.•.A,8ᐵEf1
.AD=(PBPD)+min.•.(PB+PDᔁ=12,ᦑ⌱C.ூ௃!⚪"⌕ὃ%&ᨬ'()
⚪,+,-./ᐵ⚪ᢈ12345Ḅ6789:;

8ூ±0௃0~³´µ¶Ḅ·ᦔ᳛X,vº·ᦔ᳛ºᑣ10mj=/n-3
x..x_10/«ym-?>'ᦑ⌱~C.ூ½௃¾⚪ὃ¿Àᑡ«ᦪ2ḄÁᑡ«ᦪ2ḄᐵÂ7ÃÄᳮ0ᦻÆÇÈYḄᐵÂÉÊᑮᐸYḄᦪnᐵp·Ì⚪⌕ᨵ“·ᦔ᳛”"·”“·Ñn”Nv⌕Òᦪnᐵp~·ᦔ᳛x·=·Ñn.9ஹBூᑖ᪆௃᪷ÔÕ▲ᑁḄḄᙶ᪗Õ▲+,-,Ö,ᫀ.ூ±0௃0~MᑮxḄ×Ø3,ᑮy×Ø2,XᙠÕ▲ᑁᑣMḄᙶ᪗2,-3
,ᦑ⌱~B.ூ½௃¾⚪ὃ¿ÀḄᙶ᪗ÙÚᔜ▲ᑁḄᙶ᪗ḄEÜ70ÝḄᐵÂÕv▲ḄEÜᱯᑖ7~▲+,+;ß▲+;N▲Õ▲+,-.10ஹCூᑖ᪆௃àᳮᦪá7à▲âãäᦪåÔæçᓽÖBᑨl.ூ±0௃A.7ᨵᳮᦪ┯êB.1.4147ᨵ▲äᦪ7ᨵᳮᦪ┯êC.V27à▲Hâãäᦪ7àᳮᦪÃÄD.ᡃ=27᦮ᦪ┯êᦑ⌱C.ூ½௃í⚪î⌕ὃ¿ÀàᳮᦪḄæçïðñ᪷ÜḄ⌕òHó!ô7àᳮᦪà▲Hâãäᦪàᳮᦪ.᝞“6,0.8080080008-uv8åõö1v0
>"2.11ஹAூᑖ᪆௃÷BᢚøùḄúᑖghA4',ᵫᢚøḄឋüÖ=᪷ÔNf"᜜fḄឋüÖ,N1=NZMA'+N2=N£A4'+NE4'A,ᯠþ(u2ÿᓽ.

9ூ௃fMᢚhijḄkᑖI᝞mWᡠoIpqA4'ᵫᢚhḄឋtZDAE=ZDA'E•••N1;&DAA'Ḅ᜜4IN2;AANEḄ᜜4•••Nl=mU'+NZM'A,Z2=ZEAA+ZEAA...N1+N2=ZDAA'+ZDAA+ZEAA+ZEAA=(ZDAA'+NE4A)+(ZDA'A+NEVA)=ZDAE+ZDAE=2ZDAEᦑ⌱A.ூ௃v⚪ὃ%Ḅ;345wᢚh
⚪I-.ᢚhḄឋtF345᜜4Ḅឋt;

1014ஹ1ᡈ-1ூᑖ᪆௃᪷ᐰ4±2?+஻ḄᓽmḄ.ூ௃᪷⚪!=2x2x3=12ᡈ=—2x2x3=-12,ᦑ%ᫀ'1ᡈ-1.ூ()௃*⚪+⌕ὃ.ᐰ!/0ᐰḄ1⚪Ḅᐵ3.15ஹ±1.ூ᪆௃4⚪ᑖ᪆5•.•(±2)2=4,.4Ḅ᪷1±1.ᦑ%ᫀ'61.ὃ(5᪷.1616ஹ—5ூᑖ᪆௃᪷ᢚ8Ḅឋ:DC=DEஹCP=EP,ᵫNEOF=NBOPஹNB=NEஹOP=OFOEFgZkOBP,᪷ᐰ<=>Ḅឋ:OE=OBஹEF=BP,?BF=EP=CP=x,ᑣAF=8-x,BP=6-x=EF,DF=DE-EF=8-(6-x)=x+2,ARtaADFB!AF2+AD2=DF2,xḄ!ᓽAFḄC.ூ௃᪷ᢚ8D5DCP^^DEP,.\DC=DE=8,CP=EPᙠOEFFOBPB!VZEOF=ZBOP,NB=NE=90஺!OP=OF,:.OEFHOBP(AAS),.*.OE=OB,EF=BP,.•.OE+OP=OF+OB.,.BF=EP=CP,?BF=EP=CP=x!IJJAF=8f,BP=6+EF,DF=DETF=8-(6-x)=x+2,VZA=90°,:.RtAADFB!AF2+AD2=DF2,ᓽ(8~X)2+62=(X+2)2,245x=y,2416:.AF=8-x=8-----=—,55ᦑ%ᫀ'5y.

11ூ()௃*⚪ὃ.KLBḄᢚ8M⚪!NO/0ᐰ<=>ḄᑨQRឋ:!ᑭᵨUVQᳮXYZ1⚪Ḅᐵ3.17ஹ1.ூ᪆௃...DE1ABḄᚖ\ᑖ]!AD=BD,:.NDAE=NB=30஺!.♦.NADC=NDAE+NB=60஺!NCAD=30஺!.1AD'NBACḄ>ᑖ]!VZC=10°,DE±AB,.DE=CD=3,VNB=30஺!BD=2DE=6,ூ()௃*⚪+⌕ὃ.ḄD^(ᨵ]`ᚖ\ᑖ]Ḅឋ:ஹ>ᑖ]aḄ(ᑮ>Ḅcdefg<Ḅឋ:ஹ\>=>30஺>ᡠiḄ\>dḄpQឋூ௃┑Klrst!ᓽᑖᒘᡂK=>!ᦑᑭᵨK=>ḄpQឋᦑ%ᫀ'5=>ḄpQឋ=ஹ%⚪(ᐳ78ᑖ)319ஹ(1)A(2,0)C(0,1)(2)y=--x+4
(3)zᙠ!PḄᙶ᪗'4168612(0,0)ᡈᡈ5'}ூᑖ᪆௃(1)~D\]y=-2x+lRxஹyᑖj(AஹC,ᓽAFCḄᙶ᪗(2)᪷⚪DAACD1<Ὺ=>!ADCᓽD(ᙶ᪗!ᨬᓽCDḄ᪆(3)(Pᙠ▲ᑖ!᪷ᐰ<=>ḄᑨQᡠᨵᐰ<=>!

12ᔠ⚪Ḅ(PḄᙶ᪗.ூ௃(1)(1)y=o,ᑣ-2x+l=0,x=2,AA(2,0),x=0,ᑣy=l,AC(0,1)(2)ᵫᢚ8D5CD=AD.?AD=x,I!|CD=x,BD=l-x,᪷⚪5(LX)2+22=x25x=22!AD=-,D(2,-)22?\]©'=1«+1,D(2,)ᐭ*=2k+l35k=»-43


\]CD᪆'y=—x+L4(3)জ(PR(Oᔠ!APCgZ^CBA,P(0,0)ঝ(Pᙠ¢l▲!᝞¤!ᵫ4APC^ACBANACP=NCAB,ᑣ(Pᙠ\]CDa.¥P¦PQ_LADj(Q,ᙠRtAADPB!553AD=—,PD=BD=1--=,AP=BC=2222ᵫADxPQ=DPxAP5-PQ=326APQ=-5.616••Xp=2+=95516§ஹ38x=”ᐭy=--x+1y=-545…168PW-
©ª«¥RtAAPQUVQᳮAQCᑮ(PḄ¬ᙶ᪗

13ঞPᙠ▲I᝞WvPG,£)ᔠLIᩩḄPᨵ3I…z168612ᑖ¢Pi(0,0)P(y,-)P(--,ߟ).23ὃ¤¥¦ᦪᔠ⚪.20ஹ50,(b-4)2>0,a-5=0,b-4=0,.,.a=5,b=4.,.5-4a(x+y)1ூᑖ᪆௃(1)᪷y9¶·¸ᑖᓽ(1)᪷y¹¸ᑖḄº»I¼¸½«·¹¸I¾ᑭᵨ¿ᐰ9·¸ᑖᓽ.

14ூ௃51
16X4-1=4/Ä2-1=Ç4X2+l
4x2-l
=4x2+l
2x+l
2x-l
1
3ax'+6axy+3ayi=:3a=3«x+j
1.ூ()௃*⚪ὃ.K®ᑖḄ¥Z!NO/0®ᑖḄ¯°1±*⚪Ḅᐵ3!ᓽ²³´®Ḅᐜ³´®!ᯠ·²ᔲᑭᵨ´஺22ஹ1
BD=CE,ᳮᵫ¹᪆2
90°3
ᡂY!ᳮᵫ¹᪆.ூᑖ᪆௃1
᪷<Ὺ\>=>Ḅឋ:ᑮAB=AC,ZBAD=ZEAC=90°,AD=AE,ᑭᵨ“SAS”º»ADBg^AEC,I!IBD=CE2
ᵫADBgaAECᑮNACE=NDBA,ᑭᵨ=>ᑁ>FQᳮᑮZBFC=180°-ZACE-ZCDF=180°-ZDBA-ZBDA=ZDAB=90°3
R1
l᪵º»ADBgZkAEC,¾!]BD=CE,ZACE=ZDBA,ᑭᵨ=>ᑁ>FQᳮᑮNBFC=NDAB=90°.ூ௃1
VAABC,ZKADE1<Ὺ\>=>!.,.AB=AC,ZBAD=ZEAC=90",AD=AE,ViSAADBffAAECB!AD^AE=>!.*.AB=AC,AD=AE,ZBAC=ZEAD=90°,VZBAC+ZCAD=ZEAD+ZCAD,:.ZBAD=ZCAE,ᙠaADBF4AECB!AD=AE

15.,.ÈADB^AAEC(SAS),.,.BD=CE,ZACE=ZDBA,/.ZBFC=ZDAB=90°.ூ()௃*⚪ὃ.ᐰ<=>ḄᑨQRឋ:.ᑨQ=>ᐰ<Ḅᨵ“SSS”ஹ“SAS”ஹ“ASA”ஹ“AAS”!NDᑨQÄ᪷⚪ÅᩩÇ⌱Éᔠ〉Ḅ%.123ஹ(1)x=4(2)x=-.ூ᪆௃4⚪ᑖ᪆5পZcdÌÍδ®(x+2)(x-2),ᓄ'᦮Z!ÑÒ᪷(2)ZcdÌÍδ®(x+l)(x-l),ᓄ'᦮Z!ÑÒ᪷4⚪᪆5(1)ZcdÍ(x+2)(x—2),3x(x—2)+2(x+2)=3(x+2)(x—2).ᓄÓ-4x=-16,x=4.ÔÕÒ!x=41ÖZḄ.ᡠÎÖZḄ1x=4(2)ZcdÌÍÎ(x+l)(x—D,×ᑖØ!4—(x+l)(x+2)=—(x+l)(x—l).x=g.ÔÕÒ!X=g1ÖZḄ.ᡠÎÖZḄ1X=g.24ஹ(1)SKPQ=5f-Ù(0

16.,.CP=5-t(0

17X=1!Ö=1+23ூ()௃*⚪+⌕ὃ.ᑖḄᓄÓ!NO/0ᑖḄ«ᑖFëᑖ!1⚪Ḅᐵ3.26ஹ(1)ð¤¹᪆(2)ð¤¹᪆!(஺Ḅᙶ᪗'(2,0)ூᑖ᪆௃(1)ᑖ¦(AஹBஹCᐵjxḄiñ(!êòóôõ(2)ôõAB1Ixj(P,᪷¤(PḄᙶ᪗.ூ௃(1)᝞¤ᡠÝ!AA4aᓽ'ᡠGḄᙶ᪗'(2,1),(2)᝞¤ᡠÝ!ôõABlxj(P,(öḄᙶ᪗'(2,0).ூ()௃*⚪ὃ.K¦¤-iñøᣚ!iñ-ᨬúû]M⚪!NO/0iñḄឋ:1⚪Ḅᐵ3.