八年级上册数学阶段练习题

1:____________:____________1.,A3)3(2B332C3)3(2D3322.n40,nA10B9C4D03.x,3x,xA9B3C3D34.A1B0C21D35.16A23B34C45D566.:3.14159,38,0.131131113,,25,71,A1B2C3D47.,A2)2(2B382C212D228.0a,yxyxaaa,4,22111DEABCF12EDBCA13S3S2S1A2B21C1D19.24mxA24xxmB212mxC24mxxD24xxm10.1832aaA92aaB92aaC63aaD63aa11.,1=2,BC=EF,ABCDEF,AAB=DEBACE=DFBCBF=ECDABDE12.,BE,CDABC,BD=EC,BCDCBEASASBASACAASDHL13.,,A321SSSB232221SSS18QRSPBCAC23221SSSD232122SSS14.axaxx,12422A2B3C4D515.A864B864C864D264316.A632xxxBabba532C2242xxD532632xxx17.ABCcba,,02222cbaba,ABCABCD18.,ABC,AQ=PQ,PR=PS,PRABR,PSACS,:AS=AR;QPAR;BPRQPSABCD19.3cm,5cm,A4cmB8cmC34cmD4cm34cm20.,A93B93C0D9321.,A662B932C16162D25162516222.29x,64y,yxA3B7C37D1723.,A3)3(2B332C332D33224.baabba,0,9,422A2B5C5D525.mmm,2ABCD26.21nxA12nxB22nxC22nxD222nx27.nmaa3)(Anma3Bnma3Cmna3D)(3nma28.3432yxA766yxB64278yxC1296yxD1298yx29.22bababaAyxyx2BnmmnC2332xxDbaba2230.,A15123xxxB22492323bababaC212222xxxxDyxyxyx222822231.64222babaABC0D32.6810,A6B4.5C2.4D833.9,,A121B120C90D34.bababa,0136422A32baB32baC32baD32ba35.22,2,3abbaabbaA2B3C6D636.4x2+1,,A4xB4xC4x4D4x437.12axxbabxx,2A1B2C1D238.nxxxxn,3232948122A2B4C6D839.42242bbaaA42222bbaaB222baC4baD22baba40.912xA18xxB42xxC42xxD810xx41.2007aaxax442,A22xaB22xaC24xaD22xxa42.aaa3323a,A2aB2aCa2Da243.,RtABC,C=90,BACADBCD,CD=2,DABA1B2C3D444.,ACBC,DEAB,ADBAC,43DCBA44EDCBA45CDPBOAABD+ED=BCBDEADBCADEDCDED+ACAD45.,OCAOB,POC,PDOA,PD=2,POBA1B2C3D446.,OCAOB,POC,PDOA,PD=2,MOB,PM,PMA2B3C4D547.,OPAOB,PCOA,PDOB,CD,APC=PDBOC=ODCCPO=DPODOC=PC48.,AOBAO=BO,CO=DO,ADBCP,,AODBOCAPCBPDPC=PDABCD49.a,246CDPBOAM47DCPBOA48PDABOCA22aB22aC22aD2a50.,A11B24C813Dx051.2422xxA22xxB1222xxC212xD222x52.,A180B,CD53.A6332xxxB428xxxC2045xxDxmnxnxm54.:22yx;12x;xx42;25102xx.A1B2C3D455.ABCD56.1231223.261441415.3103533,A2B3C4D557.:01001.01415926.3,27,3,5,0,813,A2B3C4D558.36,A9B12C15D121559.ABCD,60.A532aaaB222babaC63326)2(baabDabxbaxbxax261.,AABC,A:B:C=1:5:6,ABCBC,34,5D,,,cba222cba62.2232xyyxx,AyxyxxB222yxyxxC2yxxD2yxx63.,3ba624222babaA12B6C3D064.A5232aaaB6234)2(aaC222babaD326aaa65.)3(623mmAm3Bm2Cm2Dm366.(x-1)2-2(x-1)+1A(x-1)(x-2)Bx2C(x+2)(x-2)D(x-2)267.bbaba2,122A0B1C2D468.22924ykxyx,kA6B12C6D1269.22,12,7nmnmmnnmA11B13C37D6170.81A3B3C3D971.,ABCDEFAA=E,AB=EF,B=DBAB=DE,BC=EF,A=ECA=D,AB=DE,B=EDAB=DE,BC=EF,C=F72.kxkxx,5225422A10B10C20D2073.ABCD74.baxxbxax,36132A13B13C36D3675.A532xxxB532aaaC10aD523mm76.,AayaxyxaB1255102xxxxC44442xxxxDxxxxx344316277.78EFABDCA4222xxxB3382aaC523aaDmmm3378.,ABC,ADBCD,BEACE,ADBFF.BF=AC,ABCA45B48C50D6079.,;;;.A1B2C3D480.cbaABC,cabcabcba222,ABCABCD81.aa,119,A12B23C34D4582.332bb,A3bB3bCb3Db383.13m,mA0B1C2D389PQMNO84.xyxxy2,32552A15B15C215D21585.ba,2abaAba2BbCbDba286.ba,baa2Aba2Bba2CbDba287.mmm,3279311A2B3C4D588.A422642mmmB1122mmC532mmD257mmm89.,MN,PQONMO,APOBPQCMODMQ850ab860ba90.,A=D,1=2,ABCDEF,AE=BBED=BCCAB=EFDAF=CD91.,ABEFCD,ABC=90,AB=DC,A1B2C3D492.,DEAB,DFAC,AE=AF,ABD=CDBDE=DFCB=CDAB=AC93.,A5B4C3D294.yx,NMxyNyxM,2,22ANMBMNCMND95.,m9542mA8BmC1mD12m96.20092008222190EDBACF91EAFCBD92FEDABC103ABOCDA20082B20082C20092D2009297.,21aA12aB122aaC122aaD12a98.a,3,A9Ba6C96aD99.,ABC,D100..AAASBASACSASDSSS101.3235xyyx________.102.:yxxy323____________.103.,AB=CD,ADBCO,ABODCO,____________.104.2221,013xxxx________.106ABC105.11nm,,11nm2011mn________.106.,9cm,ACBC=3cm,________.107.,.:,.108.:1636________;3381________.109.baba,041122________.110.xx,02733________.111.:aa22___________.112.:92m____________.113.:1822x____________.114.2269,23bababa______.115.512,_________.116.myxyxmyx,4422________.117.:19991011922________.118.k________,296xxk.119..____________,______,,32422mbamxbxax120.:1yxxy____________.129DBCA130ABODC121.nm,555nm________.122.,8,4yxyx22yx________.123.:2222482521000________.124.21ts,222tsts________.125.223226128yxxyyx________.126.:yxyx32_________.127.14422abba,______________.128.nmnm324,0352________.129.,ABC,AB=AC,ADBAC,ABDACD.:ADBAC______=______ABDACD,____________________________________ABDACD.130.,ACBDO,OA=OC,OB=OD.:AOBCOD.:AOBCOD131DBACE____________________________________AOBCOD.131.,ACDABDCB,AEB=AED,______ABCADC,________=________,______________________,AEB=AED.132.yxyx22,54,32________.133.xyyyxx,013124422________.134.,432aa________.135.142a,,________.136.nmmnnm,0212_________.137.22,3,6xyyxxyyx________.138.:1221241232________.139.:23123aba_______________.140.baabba,6,1322________.141.22,3,4baabba________.142.:322323aa________.143.6422mxx,m________.144.:222323yxyx____________.145.52,22xx________.146.:23______32.147.RtABC,C=90,AB=2,222CABCAB_______.148.:aaa2344_______________.149.yxyx25,35,185________.150.,___________________________.151.baba_______________.152.abbaba458223_______________.153.ABCDEF,AB=DE,B=E,ABCDEF,____________.154.512,________.155.babaabba22222,_______________.156.,ABCD,AB=8cm,BC=10cm,ADAF,DBCE,CF_____________cm157.9,12.________.158.142Qx,Q:__________.EABCDF159.AAxyxyyxx,112____________.160.92xm2,3xm,x__________m.161.:1112x2942x162.:12121612533163.:12432nn232xx31132xxx4323242xxx164.:1mnmn22222249nm3abba8224yxyx632325yxyx3434262296baa165.,:1xxyyyx224)2(22,2,1yx.2221311714xxxx,21x.166.1523aa,.167