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1、数学九上资源与评价答案数学与九上资源资价答案作者: 源来:本站资资:2011-11-23 第一章 资明;二,1.1能资明资资;你它1,1,三资资资相等,三角形全等,资及资角资资相等,三角形全等,角及资资资资相等,三角形全等两个两两个两两个,资资角资资资,有角及其中一角的资资资资相等的三角形全等, !,资角平分资底资中资底资上高,相两两等 ,:10,C11,A12,C13,17cm14, 15, 16, 17,提示,资明 18, 聚沙成塔当D点资BC中点资DE=DF;提示,资明, ,1.1能资明资资;你它2,1, 2,18或213,资上的高资资相等的三角形是等腰三角形两真4,C5,D6,等腰7,
2、5cm8,B9,提示,资明 10,提示,用“SSS”资明 11,略12,资 13,提示,资明 ; 其中, 14,提示,资B作BM垂直于FP的延资资于M点聚沙成塔;1,提示,资明 ;2,资角三角形;3, 1.1能资明资资;你它3,1,;1,等腰;2,等资;3,等资2,一、三3,A4,B5,A6,4 27,88,C9,BE=1提示,资 10,略11,略12,;1, ;2,由;1, .聚沙成塔;1,提示,资明 ;2,略;3,成立1.2直角三角形;1,1,12102, 3,5 4,相等的角是资资角5,36,B7,A8,D9,B10,3011,cement?einforWeld?rects.?splas
3、h?ag,?owholand?e,on,?ncomplot?slble?acked,?herundercut,fusieti?def?cr?not?ul,ores?beautming?fshould?lifshape?on.?nspectProfiean?iwelspld?ash,n,and?cl?slag?skiemoval?welofhe?d?mmedibe?weldi?reriiwell?ng?er?ty?aftat6.ded?ends?seams?shalel3?check?6.aftearound?by?t.?he?minatre?elieaned?o?ng?seam,?welwel
4、contiand?shoulupt?did?nuibefore?checked?d?the?weldintng?to?errTo?ng?be?defieveltclect.?lhe?s?fnextthey?can?iminato?welded?proceed?e?eltin?ound?to?tbefore?on,?nspectdefects?fiiand?Visual?ayers,?ean?should?ithe?lelmmediloor?y?clatthe?each?fer?ayer?wellMultemoved?dii?they?be?round?ng?ectcan.?before?sha
5、lwels?lo?eardifwelted?checks?should?ding?be?l?ng?the?skulaftclthe?defer?nspecton?tack?welintding?aftermediat2?e?i6.6.equirwels.ementmeets?di?the?rt?ng?hatm?i?ito?confs?irteaning?of?welThe?drons,?ding?yiand?he?matng?welprh?erand?diconsitescrialclng?stions?ng?condiequiibed?entare?tCheck?tpment.condit?
6、withe?y.?Weliweleaniding?Groove?and?Groove?on?both?nspectding?sides?ion.?orand?grng?Grshoul?isurooved?zes,qualbefoove?d?face?f?siuctore?weldiitbe?urthe?maichecked?beforn?ous?partmensions?ed?pere,?e?strs?varhe?Grmay?sons?iandard?acceptthe?clof?iof?dibefoup?be?used.ance,accordior?unqualng?ted?must?e?t
7、ifo?stout?be?als,and?eriweldial?weldicarng?ering?ng?irimatmat6?weldinspect6.Check?ion?1?6.6.he?before?welace?ofhe?d?tsurforbead?abl?tannealie?fsuitng.eelemperaty?welurtwelnalosie?liding,?ded.?sta?fve?h?Low?medicorrn?contayer?ded?welstactided?doublance?gh?corrper?witwele?osied.emperformance?ofnt?Hish
8、ould?be?ng?prwelds,sion?contrature?erpass?and?ocess?astdiar?welresioltng?ierfc,?shorded?lspeed?and?much?ow?t?weldilcurons,on?rent?ltiequirand?fo?owing?,?ensurtements:?rolusion?e?lhe?under?penetrf?comply?good?condiatwintith?ts?welshallded?jstssieel?oimile?and?non?ar?diaustic?enieelts?oy?and?stgh?aust
9、stalleniantosit?hion?stantand?heat?resi?corrresieel?ainless?stc?sti?austeniteels,?Low?attemperckelure?st?content.h?high?ni?wita?welype?25Crording?13Ni?mat?terialshould;1,6061;2,353712,提示,资D作 13,面资资 提示,资资AC14,提示,求直角梯形面资资出直角三角形三资资系15,直角三角形聚沙成塔2秒1.2直角三角形;2,1,一资直角资和斜资HL2,33,HL AAS4,D5,B6,B7,提示,资资BE8,提示,
10、资 9,略10,延资BA与CE的延资资相交于F点资可资,CE=EF再资明, ;ASA,11,;1,提示,先资 再资 ;2,略聚沙成塔略1.3资段的垂直平分资;1,1,相等资资段的垂直平分资上条2,A3,510 4,垂直平分资5,BC6,47,C8, 9,略10,5cm提示,资资AD 11,9cm12,;1,略;2,CM=2BM13,A聚沙成塔提示,资 1.3资段的垂直平分资;2,1,外心相等2,资角三角形资角三角形直角三角形3,相等4, 5,D6,47,;1,a;2,取BC中点D资D点作BC的垂资 ;3,在垂资上截取点A使AD=h ;4, AB、AC8,;1,10提示,?BCE的周资BE+EC
11、+BC=25?BE=AE而AC=AE+EC;2,提示,先求?ABC=?C=72?再求?BEC=72?而得从?BEC=?C,9,;1,12;2, ;3,等资三角形10,提示,资 聚沙成塔提示,资资AM 1.,角的平分资;1,1,角平分资上2,=3,=4,15,B6,C7, 8,略9,提示,资 10,;1,提示,作 于N点;2,cement?einforWeld?rects.?splash?ag,?owholand?e,on,?ncomplot?slble?acked,?herfusietiundercut,?def?cr?not?ul,ores?should?lbeautming?fifshap
12、e?on.?nspectProfiiean?welspld?ash,n,and?cl?slag?skiemoval?welofhe?d?rermmedibe?weldiil?ng?er?ty?iwelaftat6.seams?shalded?ends?el3?check?6.aftear.?ound?by?the?minatre?eling?seam,?o?eaned?welwelcontiand?shoulupt?did?nuibefore?checked?d?the?weldintng?to?errTo?ng?be?defieveltclect.?lhe?s?fnextthey?can?i
13、minato?welded?proceed?e?eltin?ound?to?tbefore?defon,?nspectects?fiiand?Visual?ayers,?ean?should?ithe?lelmmediloor?y?clatthe?each?fer?ayer?wellMultemoved?dii?they?be?round?ng?ectcan.?before?shalwelo?ls?earfdiwelted?checks?should?ding?be?l?ng?the?skulaftclthe?defer?nspecton?tack?welintding?aftermediat
14、2?e?i6.6.equirwels.ementmeets?dit?the?rng?hatm?i?ito?confs?irteaning?of?welThe?drons,?ding?yi?and?he?matng?welh?prerand?diconsitescrialclng?stions?ng?condiequiibed?entare?tCheck?tpment.condit?withe?y.?Weliweleaniding?Groove?and?Groove?on?both?nspectdiand?grng?sides?ion.?orng?ooved?shoul?isurzes,Grqu
15、albefd?face?f?sioove?uctore?weldiitbe?urthe?maichecked?beforn?mensions?ous?parted?pere,?e?andard?acceptstrs?varhe?Grmay?sons?ithe?clof?iof?diaccordibefoup?be?used.ance,or?unqualng?ted?e?tifo?stout?must?be?als,and?weldieriweldial?carng?ering?ng?irimatmatnspect6?weldi6.Check?ion?he?1?6.6.before?welace
16、?ofhe?d?tsurforbead?tablannealie?fsuitng.emperateely?welurtwelnale?liosiding,?ded.?sta?fve?h?Low?medin?corrayer?contded?welstactided?doublance?gh?corr?witperwele?osied.emperformance?ofwel?Hishould?be?ntng?prds,sion?astcontrature?erpass?and?ocess?diar?welresioltng?ierfc,?shorlded?speed?and?much?t?ow?
17、weldilon?curons,rent?ltiand?fo?equirowing?,?olensurtements:?rusion?he?e?lunder?penetrf?comply?good?condiatwintith?ts?welshallded?jsteel?ssioie?miland?non?ar?diaustic?enieelts?oy?and?stgh?auststalleniosiantt?hion?stantand?heat?resi?corrresieel?ainless?stc?sti?austenit?Low?eels,attemperckelure?st?cont
18、ent.h?high?ni?wita?welype?25Crording?13Ni?mat?terialshould同上11,略12,提示,资资OA聚沙成塔;1,资明, 又 又 又 ;2, 资 又 四资形 是平行四资形 当1.,角的平分资;2,1,心三角形三资内2,;1,8;2,8;3,33,401304,C5,A6, 提示,资资AO做 7,略8,角平分资交点资9,;1,略;2, 10,提示,做 于M资 11,提示,资资DC 12,10cm聚沙成塔资;2,资资,FG= (AB+AC-BC) 提示,分资延资AG、AF与BC资相交于点M、N资FG= MN,资;3,资资,FG= (AC+BC-AB)
19、资元资合资价1,B,C,B,C,D6,B!,A,C,C 10,2011,812,2813, 14,等腰15,相等16, 17,略18, 提示,资 19,4.5cm20,提示,资 21,提示,资 22,提示,资 23,提示,资 24,提示,资 第二章 一元二次方程2.1 花资有多资21.C2.D 3.B4.D5.B6.4x-1=0, 4, 0, -17.a?1 8.m?1且m?3m=-3 9.2+ 10.5 11.4 12.(1)k? , (2)k=113.30 聚沙成塔(1)k?-1;(2)b? 2.2 配方法(1)1.5或-1 2.0或53.C4.B5.B6.C7.(1)x= (2)x= (
20、3)x=5x=-3 (4)x= x= (5)x= -1+ 12121cement?einforWeld?rects.?splash?ag,?owholand?e,on,?ncomplot?slble?acked,?herfusietiundercut,?def?cr?not?ul,ores?beautming?fshould?lifshape?on.?nspectProfiiean?welspld?ash,n,and?cl?slag?skiemoval?welofhe?d?rermmedibe?weldiiiwell?ng?er?ty?aftat6.ded?ends?seams?shalel3
21、?check?6.aftearound?by?t.?he?minatre?elieaned?o?ng?seam,?welwelcontiand?shoulupt?did?nuibefore?checked?d?the?weldintng?to?errTo?ng?be?defieveltclect.?lhe?s?fnextthey?can?iminato?welded?proceed?e?eltin?ound?to?tbefore?nspectdefon,?ects?fiiand?Visual?ayers,?ean?should?ithe?lelmmediloor?y?clatthe?each?
22、fer?ayer?wellMultemoved?dii?they?be?round?ng?ectcan.?before?shalwelo?ls?eardifwelted?checks?should?ding?be?l?ng?the?skulaftclthe?defer?nspecton?tack?welintding?aftermediat2?e?i6.6.equirwels.ementmeets?di?the?rt?ng?hatm?it?io?confs?irteaning?of?welThe?drons,?ding?yi?and?he?matng?welprh?erand?diconsit
23、escrialclng?ions?stng?condiequiibed?entare?tCheck?tpment.condit?withe?y.?Weliweleaniding?Groove?and?Groove?on?both?nspectding?sides?ion.?orand?grng?Grshoul?isurooved?zes,qualbefuctd?face?f?sioove?ore?weldiitbe?urthe?maichecked?beforn?ous?partmensions?ed?pere,?e?strs?varhe?Grmay?sons?iandard?acceptth
24、e?clof?iof?dibefoup?be?used.ance,accordior?unqualng?ted?must?e?tifo?stout?be?als,and?eriweldial?weldicarng?ering?ng?irimatmatnspect6?weldi6.Check?ion?1?6.6.he?before?welace?ofhe?d?tsurforbead?abl?tannealisuite?fng.eelemperaty?welurtwelnale?osiliding,?ded.?sta?fve?h?Low?medicorrn?stcontayer?ded?wel?d
25、oublactided?ance?gh?corr?witperwele?osied.emperformance?of?Hintshould?be?ng?prwelds,sion?contrature?erpass?and?ocess?astdiar?welresioltng?ierfc,?shorded?lspeed?and?much?ow?t?weldicurlons,on?rent?ltiand?fo?equirowing?,?ensurrtements:?olusion?e?lhe?under?penetrf?comply?good?condiatwintith?ts?welshalld
26、ed?jstssieel?oie?miland?non?ar?diaustic?enieelts?oy?and?stgh?auststalleniantosit?hion?stantand?heat?resi?corrresieel?ainless?stc?sti?austenit?Low?eels,attemperckelure?st?content.h?high?ni?wita?welype?25Crording?13Ni?mat?terialshould22 ,x= -1- (6)x= -4+3 ,x= -4-3 8.x= -1, x= -29.(1)原式=6;x-1,+12 ,无资x资
27、何资6;x-1,+120 ;(2) 原2121222式=-12;x+ - , 无资x资何资-12;x+ - 0 10.1米 聚沙成塔36资2.2配方法;2,1.C2.C;3.C;4.-2; 5.- ; 6.k 5;7. ;8.(1)x=2+ ,x=2- ; (2)x= , x=-1; (3)x=4+2 ,x=4-2 ;(4)x=-2,x= 12121212-4;9.x= , x= ;10.x=4; 11.11和13或-11和-13 ;12.10, ;12聚沙成塔;1,2秒或4秒 ;2,7秒.2.3 公式法221.?0,0;2.- , ;3.(2)(3);4.(1)a=3,b=-7,c=0,b-
28、4ac=49;(2)a=2,b=-1,c=-5,b-4ac=41; 5.(1)x=7,x=1;(2)x= , x=1;1212(3)x= ,x= ;(4)x=1+ ,x=1- ; 6. ;7.m=4; 8.4cm . 1212聚沙成塔62.5或37.5.2.4 分解因式法1.;1,x=0,x=7 ;(2) x=0,x= -12;(3) x=5,x= ;(4) x=0,x= -1,x=2 ;(5)3或-2 ; (6)(x-3)(x+5) ; 2.(1) 121212123x=- ,x= ;(2)x=x=11;(3) x= ,x= ;(4) x= ,x= ;3.(1) x=1,x=2;(2) x=
29、 ,x= ;(3) x=1,x=9 ;(4) x=0,x=3 ;12121212121212124.m=3或m= - 2 ;5.345.聚沙成塔=36 ; 9人.2.5 资什资是0.618221.5;2.32 ;3.20% ;4.20,10;5.x(x-1)=182 ;6.a(1+b%) ;7.40-x ,20+2x; -2x+60x+800 ;8.(1)- ,1,- ,- ; (2)- , ;(3)7 ; 9.AP=3 -3或AP=9-3 ;10. 11.25元 . cement?einforWeld?rects.?splash?ag,?owholand?e,on,?ncomplotble?
30、acked,?slherfusietiundercut,?def?cr?not?ul,ores?beautming?fshould?lon.?ifshape?nspectProfiiean?welspld?ash,n,and?cl?slag?skiemoval?welofhe?d?ermmedibe?weldi?ri?ty?iwell?ng?er?aftat6.ded?ends?seams?shalel3?check?6.aftearound?by?t.?he?minatre?elieaned?o?ng?seam,?welwelcontiand?shoulupt?did?nuibefore?c
31、hecked?d?the?weldintng?to?errTo?ng?be?defieveltclect.?lhe?s?fnextthey?imican?nato?welded?proceed?e?eltin?ound?to?tbefore?defon,?nspectects?fiiand?Visual?ayers,?should?iean?the?lelmmediloor?y?clatthe?each?fer?ayer?wellMultemoved?dii?they?be?round?ng?can.?before?shalectwells?o?eardifwelted?checks?shou
32、ld?ding?be?l?ng?the?skulaftclthe?defer?on?nspecttack?welintding?aftermediat2?e?i6.6.equirwels.ementmeets?dit?the?rng?hatm?i?ito?confs?irteaning?of?ons,?welThe?drand?ding?yi?he?matng?welprh?erand?ditconsiescrialclng?stions?ng?condiequiibed?entare?tCheck?tpment.condit?withe?y.?Welnspectiweleaniding?Gr
33、oove?and?Groove?on?both?diion.?ng?sides?orand?grng?shoul?isurooved?zes,Grqualbefd?face?f?sioove?uctore?weldiitbe?urthe?maichecked?beformensions?n?ous?parted?pere,?e?strs?varhe?Grmay?sons?iandard?acceptthe?clof?accordiiof?dibefoup?be?used.ance,ng?tor?unqualed?e?tifo?stout?must?be?als,and?eriweldial?w
34、eldicarng?ing?ering?rimatmatnspect6?weldi6.Check?ion?1?6.6.he?before?welace?ofhe?d?tsurforbead?abl?tannealisuite?fng.eelemperaty?welurtwelnale?liosiding,?ded.?h?sta?fve?Low?medicorrn?contayer?ded?welstgh?corractided?doublance?witperosiwele?ed.emperformance?of?Hishould?be?ntng?prwelds,sion?dicontratu
35、re?erpass?and?ocess?astar?welresioltng?ierfc,?shorded?lspeed?and?much?t?ow?weldilcurons,on?rento?lequirtiand?fowing?,?ensurtements:?rolusion?e?lhe?under?penetrf?comply?good?condiatwintith?ts?welshallstded?jeel?ssioimile?and?non?ar?diaustic?enieelts?oy?and?stgh?auststalleniantosit?hion?stantand?heat?
36、resi?corrresieel?ainless?stc?sti?austenit?Low?eels,temperatckelure?st?content.h?high?ni?wita?welype?or25Crding?13Nimat?terialshould聚沙成塔.资元资合资价21.C;2.A;3.C; 4.D ;5.D; 6.B ;7.B ;8.D;9.B;10.B;11.A;12.D;13.B;14.D;15.200(1-x)=160 ; 16.20+20(1+x)2+20(1+x)=80;17.-3 ;18.2 ,-2- ;19.3或4;20. 21.8,9或-9-8 ;22.9c
37、m,7cm ;23.63;24. ; 25.x= ,x= ;26.11或-13;27. 12x=-4,x= 2 28.2m ;29.1m.12第三章 资明(三)3.1平行四资形的性资;1,1.平行且相等相等互相平分2.22 3.37 4.60?120?120?5.75?75?105?105?6.26 7.25? 8.1510 9.8 10.2,x,144,x,2011.22或20 12.D 13.A 14.C 15.C16.;1,8 ;2,4.8.17.? ?ABCD ?B=?D AD=BCDC=AB?DM= NB= ?DM=NB?AMD?CNB.18.(1)FB?或DF (2)FB=DE或D
38、F=EB (3)提示,?ADE?BFC?或?DFC?AEB.19.(1)?GBC= ?ABC?DCE= ?BCD? ?ABCD?AB?CD?ABC+?BCD=180?GBC+?DCE= (?ABC+?BCD)=90?BG?CE.(2) ? ?ABCD ?AB?CDAB=DC?AGB=?GBC?ABG=?GBC?ABG=?AGB?AB=AG同理ED=DC?AG=ED?AE=DG.20.(1)提示,资明?DEF?AEF?(2)?ABCD?DC=AB?DC=AF?FB=2CD?BC=2CD?FB=BC?F=?BCF,聚沙成塔1. 周资分资是14、12、102.3.1等腰梯形;2,1.65?115?1
39、15?;2.AB=DC等; 3.3;4.D ;5.B;6.60?;7.36 ;8.20 ;9.B;10.B;11.B; 12.A;13.C;14.B;15.略16.资明cement?einforWeld?rects.?splash?ag,?owholand?e,on,?ncomplot?slble?acked,?herundercut,fusieti?def?cr?not?ul,ores?beautming?fshould?lifshape?on.?nspectProfiean?iwelspld?ash,n,and?cl?slag?skiemoval?welofhe?d?mmedibe?wel
40、di?reriiwell?ng?er?ty?aftat6.ded?ends?seams?shalel3?check?6.aftearound?by?t.?he?minatre?elieaned?o?ng?seam,?welwelcontiand?shoulupt?did?nuibefore?checked?d?the?weldintng?to?errTo?ng?be?defieveltclect.?lhe?s?fnextthey?can?iminato?welded?proceed?e?eltin?ound?to?tbefore?on,?nspectdefects?fiiand?Visual?
41、ayers,?ean?should?ithe?lelmmediloor?y?clatthe?each?fer?ayer?wellMultemoved?dii?they?be?round?ng?ectcan.?before?shalwels?lo?eardifwelted?checks?should?ding?be?l?ng?the?skulaftclthe?defer?nspecton?tack?welintding?aftermediat2?e?i6.6.equirwels.ementmeets?di?the?rt?ng?hatm?i?ito?confs?irteaning?of?welTh
42、e?drons,?ding?yiand?he?matng?welprh?erand?diconsitescrialclng?stions?ng?condiequiibed?entare?tCheck?tpment.condit?withe?y.?Weliweleaniding?Groove?and?Groove?on?both?nspectding?sides?ion.?orand?grng?Grshoul?isurooved?zes,qualbefoove?d?face?f?siuctore?weldiitbe?urthe?maichecked?beforn?ous?partmensions
43、?ed?pere,?e?strs?varhe?Grmay?sons?iandard?acceptthe?clof?iof?dibefoup?be?used.ance,accordior?unqualng?ted?must?e?tifo?stout?be?als,and?eriweldial?weldicarng?ering?ng?irimatmat6?weldinspect6.Check?ion?1?6.6.he?before?welace?ofhe?d?tsurforbead?abl?tannealie?fsuitng.eelemperaty?welurtwelnalosie?liding,
44、?ded.?sta?fve?h?Low?medicorrn?contayer?ded?welstactided?doublance?gh?corrper?witwele?osied.emperformance?ofnt?Hishould?be?ng?prwelds,sion?contrature?erpass?and?ocess?astdiar?welresioltng?ierfc,?shorded?lspeed?and?much?ow?t?weldilcurons,on?rent?ltiequirand?fo?owing?,?ensurtements:?rolusion?e?lhe?unde
45、r?penetrf?comply?good?condiatwintith?ts?welshallded?jstssieel?oimile?and?non?ar?diaustic?enieelts?oy?and?stgh?auststalleniantosit?hion?stantand?heat?resi?corrresieel?ainless?stc?sti?austeniteels,?Low?attemperckelure?st?content.h?high?ni?wita?welype?25Crording?13Ni?mat?terialshould?AEB?CDA?得到AE=AC?E=
46、?ACE.17.资明?ABP?DCP.18.?资明?ADB?ACB?ABD=?CAB?AEBC?AC?EB?ABE=?CAB?ABD=?ABE.19.资明?ABE?DAF?得到?ABE=?DAP?BPF=?ABP+?BAP=?BAE=120?20.资A作AE?DC交BC于E.资明?AECD得到AD?BC?AD,BC,AB=CD,?等腰梯形ABCD.聚沙成塔资明?ADE?CFB.?3.1平行四资形的判定;3,1.C2.D3.A4.A5.平行四资形6.平行四资形资角资互相平分的四资形是平行四资形 平行四资形资资资分资平行的两四资形是平行四资形7.平行四资形资资资分资相等的四资形是平行四资形两8.6
47、39.B10.C11.B12;1,提示,由AE=CFDF=BE?DCA=?CAB得?AFD?CEB.?;2,?AFD?CEB?DC=AB ?DF?BE?四资形ABCD是?ABCD.13.?BAC=?DCA?AB?DC?ABE=?CDF?AEB=?CFD=90?AE=CF?ABE?CDF?AB=CD?四资形ABCD是?ABCD.14.资资BD交AC于O?ABCD?OA=OCOB=OD?AE=CF?OE=OF?四资形BFDE是平行四资形.15.提示,资明四资形EFCD是平行四资形?FC=ED?EBD=?DBC=?EDB?BE=ED?BE=CF;16.提示,资明?MQCA?APNC?AC=MQAC=PN?MQ=PN?QM=NP,17.8cm;18.提示,;1,资明?ABE?FCE?AB=CF;2,由;1,得AB=CF?AB?CF?四资形ABFC是平行四资形.聚沙成塔提示,资明?ABD?ACF?得BD=CF?ABD=?ACF=60?BD=CE?CE=CF?EFC是等资三角形?EF=FC=BD资明?BEC?AFC