您好,欢迎访问三七文档
当前位置:首页 > 中学教育 > 初中教育 > 初中七年级上旋转动角问题专题
1..1.2.3.4..AOB=150OCAOBBOC=6011OEAOBODBOCCOD=BODDOE22OEOOA15/OBOFOOB5OAtEOC=FOCt3OMOOA15OBONAOM2BONBOMt01801AOB=150OEAOBEOB=AOB=75BOC=60COD=BODBOD=40COD=20EOD=EOBDOB=7540=352OEAOCEOC=FOC9015t=605t2t=3OEOF15t+5t=150t=7.5EOC=FOCt=3s7.5s32BONBOM4t12AOM=15tAON=MON=7.5tBON=2107.5tBOM=21015t2BONBOM=22107.5t21015t=2104t12.1534030+755728212725302431OCAOB3AOBAOCBOCOCAOB2MPN=75PQPPN15PMP5PQPN180PQPMtPQMPNt341AOBOCAOB2AOBOCCOBOAOBOOEBOE=EOCOE376AOB=.5AOB=20AOE=110OBAOCODAOE1COD2OOAOD3AOEOAOE53OOAOAOEAOE=306OABCODOEBOC1AOC=100DOE=AOC=120DOE=2AOC=DOE=3AOCOFAOC2BOE=4AOFAOFDOE47ABCDEF1D=30BAC=451DBA2DBEB2BMBNDBAEBCMBN3BDEB328EFMNOMOE=30OOAMNOBNOEO3ts1tOBNOEOAMOE2EFO9tEFAOBEFNOBt59OABOOCBOC=13545OOMABAB11O902BOM=2OMCON22O3ONAOCAOMCON31O5tONAOCt6101AB66DCE=90COD11CFACEAOF=22DCEt0t3C30tCFACEDCF=t=1=BCE33D1C1E1DCEDCEt0t3C30tCFACEDCF=D1C1E1t0t3C130tC1F1AC1E1D1C1F1=||=20t7.1534030+7557281293758534030+755728=1289758=12937582190272572.530241330=902230=72.53x6x0.5x=2905.5x=180x=2460=2460=43.54343+1=444431OCAOB3AOBAOCBOCOCAOB2MPN=75PQPPN15PMP5PQPN180PQPMtPQMPNt38NPQ=MPN15t=75+5tt=3NPQ=MPN15t=75+5tt=NPQ=MPN15t=75+5tt=t341AOBOCAOB2AOBOCCOBOAOBOOEBOE=EOCOE376AOB=114OCAOBAOC=BOC=AOBAOB=2AOC=2BOC3762COE=76COE=38BOE=EOCBOE=38=199BOC=BOE+EOC=19+38=57AOB=2BOC=257=114.5AOB=20AOE=110OBAOCODAOE1COD2OOAOD3AOEOAOE53OOAOAOEAOE=301OBAOCAOB=20AOC=40ODAOEAOE=110AOD=55COD=AODAOCCOD=5540=1529055=35OD353xAOE=301OAOE5x110=3x30x=402OAOE5x110=3x305x110=3x+30x=706OABCODOEBOC1AOC=100DOE=50AOC=120DOE=602AOC=DOE=103AOCOFAOC2BOE=4AOFAOFDOE1AOC=100BOC=180100=80OEBOCCOE=BOC=80=40COD=90DOE=CODCOE=9040=50AOC=120BOC=180120=60OEBOCCOE=BOC=60=30COD=90DOE=CODCOE=9030=602DOE=AOC=BOC=180OEBOCCOE=BOC=90COD=90DOE=CODCOE=9090=3DOEAOF=45AOC2BOE=4AOFAOC3AOF=2BOE+AOFDOE=xAOF=y11=AOC3AOF=2DOE3AOF=2x3y=2BOE+AOF=290x+y=1802x+y2x3y=1802x+y4x4y=180xy=45DOEAOF=457ABCDEF1D=30BAC=451DBA2DBEB2BMBNDBAEBCMBN3BDEB321DBA=DBCABC=6045=152MBNABE=xABD=60xCBE=45xBMBNABDCBEABM=ABD=60xEBN=EBC=45xMBN=ABM+ABE+EBN=60x+x+45x=52.532ABE=xABD=60+xCBE=45+xBMBNABDCBEABM=ABD=60+xEBN=EBC=45+xMBN=ABMABE+EBN=60+xx+45+x=52.5128EFMNOMOE=30OOAMNOBNOEO3ts1tOBNOEOAMOE2EFO9tEFAOBEFNOBt1OBNOENOB=NOE=18030=75903t=75t=5MOA=35=15=MOEOAMOE2OEAOB30+9t3t=902t=2.5OFAOB30+9t3t=180+902t=32.5t2.5s32.5sEFAOBOBMN180309t=903t2t=14OBMN9t36030=3t902t=38EFNOBt14s139OABOOCBOC=13545OOMABAB11O902BOM=902OMCON22O3ONAOCAOMCON31O5tONAOCt4.540.512BOM=90OMCONBOC=135MOC=13590=45MON=45MOC=MON2AOM=CON3MON=45AOM=45AONAOC=45NOC=45AONAOM=CON3T=455=4.5t=180+22.55=40.5101AB66DCE=90COD1411CFACEAOF=4522DCEt0t3C30tCFACEDCF=t=130BCE33D1C1E1DCEDCEt0t3C30tCFACEDCF=D1C1E1t0t3C130tC1F1AC1E1D1C1F1=||=20t11EOD=90OFEODFOD=EOD=4522t=1DCA=30ECD=90ECA=120CFACEFCA=ECA=60FCD=6030=302BCE=2DCE=90DCF=ECF=90CFACE15ACF=ECF=90AOBAOB=180BCE=AOBECDACD=18090902=233FCADCA=90+30t30t=4515tAC1D1+AC1F1=30t+9030t=45+15t||=20|30t|=20t=
本文标题:初中七年级上旋转动角问题专题
链接地址:https://www.777doc.com/doc-7257945 .html