江苏省徐州市2016-2017年度第一学期八年级数学期中试卷

2016-201712090(8,3,24.)1ABCD224A.8B.10C.810D.3abcabcA124B135C347D512134.AABCBABCCABCDABC5ABDACEAEC110DAEA30B40C50D606ABCAB=ACADBACAB=5AD=3BCA5B6C8D.10657AA'BB'OAA'BB'OA'B'ABAOBA'OB'ABCD8BACCBEPBE=BCPBCEHPGADBCFABGGA=GP::PACPABSSACABBPCEFP=FCA.B.C.D.83249__________10.6cm__________cm1180__________121=2ABDACD__________.()131268________14.10cm16cm__________cm15ABCC=90AB=10ADABCCD=3ABD__________167(a)(b)(a)BAC90AB3AC4DEFGHIKLMJKLMJ__________.97217.6AC=AE1=2AB=AD.BC=DE.18.6ABCCFABBEACMNBCEFMNEF19.844420.81191BCPPABACAPQQB=QC21CQBQCBQ.21.8ABCPABCQABP=ACQBP=CQ1ABPCAQ2APQ22.6AB25kmCDDAABACBABBDA=15kmCB=10kmABECDEE,EA23.6ABCDMENACBCABMNDMENF1CMN15cmAB2MFN=70MCN24.121ABCAB=ACABCACBOOEFBCABACEF____.EFBECF2ABAC_____._____________EFBECF___________________.3ABCABCOOOEBCABEACF_______.EFBECF25.12ABCACB90AB5cmBC3cmPA2cmACBBtt01ACPPAPBt2PABCt.2016-201721DECAB3243249.10.311.805012.B=CDC=BDCAD=BAD13.214.9.615.1516.11017.ABCADEBAC=1+EABEAD=2+EAB1=2BAC=EAD.........................3ABCADEAB=ADBAC=EADAC=AEABCADESAS.......5BC=DE..........618.MFME..........................................1CFABRtBFCMBCMF=21BC............3ME=21BC...........4ME=MFNEFMNEF..........................619.220.1PQ22262CQ262BQ522BC...............7222BCBQCQCBQ.........821.1ABCAB=ACBAC=60...................................2ABPACQABPACQSAS................................42ABPACQBAP=CAQAP=AQAPQ....................................612345678ABDDBCADBAP+CAP=60PAQ=CAP+CAQ=60APQ...............................................822.122AE=xkmCDEDE=CEDE2=CE2...3152+x2=102+25-x2.......................................5x=10EA10..........................................623.1DMENACBC,AM=CM,BN=CN,......................................................1CMN=CM+MN+CN=AM+MN+BN=AB,..............................2CMN15cm,AB=15cm............................................................32MFN=70,MNF+NMF=180-70=110,AMD=NMF,BNE=MNF,AMD+BNE=MNF+NMF=110,A+B=90-AMD+90-BNE=180-110=70,.......................4AM=CM,BN=CN,A=ACM,B=BCN,..............................................5MCN=180-2A+B=180-270=40.........................624.(1)5,................................................................1EF=BE+CFBOABCEBO=OBCEFBCEOB=OBCEOB=EBOEO=EB.......................................................2FO=FC..............................................3EF=EO+FO=BE+CF..............................................4(2)2BEO,CFO,EF=BE+CF........................................8(3)2.............................................................9EF=BECFBOABCEBO=OBCEFBCEOB=OBCEOB=EBOEO=EB...........................................10FO=FC............................................11EF=EO-FO=BE-CF............................................1225.1RtABC222ABBCAC4AC......................1PPA=PBPA=PB=2tPC=4-2tRtBPC......................................3..................................................4(2)PCBABCt=2t=3.5..6PACPABCPAB4-2t..........................................8..................................................9PBCPBACPAB2t-4.......................................11..................................................12t=2t=3.545t38t