首页
试卷库
试题库
当前位置:
X题卡
>
所有题目
>
题目详情
如图,⊙O是△ABC的外接圆,AE平分∠BAC交⊙O于点E,∠ABC的平分线BF交AD于点F,交BC于点D. (1)BE=EF; (2)若DE=4,DF=3,求AF的长.
查看本题答案
包含此试题的试卷
教案备课库《》真题及答案
点击查看
你可能感兴趣的试题
如图⊙O.是△ABC的外接圆AE平分∠BAC交⊙O.于点E.交BC于点D.过点E.做直线l∥BC.1
如图AD是△ABC的角平分线延长AD交△ABC的外接圆O.于点E.过C.D.E.三点的圆O1交AC的
如图已知⊙O是△ABC的外接圆AB是⊙O的直径D.是AB的延长线上的一点AE⊥DC交DC的延长线于点
如图△ABC的角平分线AD的延长线交它的外接圆于点E.Ⅰ证明△ABE∽△ADCⅡ若△ABC的面积S.
如图⊙O是等腰三角形ABC的外接圆AB=AC延长BC到点D使CD=AC连接AD交⊙O于点E连接BE与
如图△ABC中AB=AC⊙O是的外接圆BD⊥AC于点D交⊙O于点FAO的延长线交BD于点E连接AF.
已知⊙O.为△ABC的外接圆点E.是△ABC的内心AE的延长线交BC于点F.交⊙O.于点D.1如图1
如图在Rt△ABC中∠C.=90°BE平分∠ABC交AC于点E.作ED⊥EB交AB于点D.⊙O.是△
如图⊙O.是△ABC的外接圆O.点在BC边上∠BAC的平分线交⊙O.于点D.连接BDCD.过点D.作
如图⊙O.是△ABC的外接圆OD⊥AB于点D.交⊙O.于点E.∠C.=60°如果⊙O.的半径为2那么
如图圆O是△ABC的外接圆过点C的切线交AB的延长线于点D且则AC的长为
如图在△ABC中∠BAC的角平分线AD交BC于E.交△ABC的外接圆⊙O.于D.1求证△ABE∽△A
如图⊙O.是△ABC的外接圆点O.在BC边上∠BAC的平分线交⊙O.于点D.连接BDCD过点D.作B
如图已知⊙O.是以AB为直径的△ABC的外接圆过点A.作⊙O.的切线交OC的延长线于点D.交BC的延
已知⊙O.为△ABC的外接圆圆心O.在AB上.1在图1中用尺规作图作∠BAC的平分线AD交⊙O.于D
如图在△ABC中∠C.=90°∠ABC的平分线交AC于点E.过点E.作BE的垂线交AB于点F.⊙O.
选修4-1几何证明选讲如图⊙O是等腰三角形ABC的外接圆AB=AC延长BC到点D.使CD=AC连接A
如图⊙O.是△ABC的外接圆AB是⊙O.的直径D.是AB的延长线上的一点AE⊥DC交DC的延长线于点
如图⊙O.是△ABC的外接圆BC为⊙O.的直径点E.为△ABC的内心连接AE并延长交⊙O.于D.点连
如图△ABC中∠BAC的平分线交BC于D.交△ABC的外接圆⊙O1于E.过点C.D.E.作⊙O2A
热门试题
更多
We'llhavetodoinEnglishclass. A.somethinginteresting B.interestingsomething C.anythinginteresting D.interestinganything
BoysandgirlspleaseturntoPageandlookatthepicture. A.Fifthfive B.Fivefive C.Fifthfifth D.Fivefifth
Myparentsoftenpreventmecomputergamesonschooldays. A.play B.playing C.toplay D.toplaying
﹣We'reorganizingapartynextSaturdayandI'dlikeyoutocome. ﹣!Ihaveameetingtoattendthatday.Thankyouallthesame. A.Goodluck B.Whatapity C.Allright D.I'dliketo
请指出这句话中的错误. Pleasethemistakeinthissentence.
﹣﹣﹣Youhaveanicefork!Isitmadesilver? ﹣﹣﹣YesanditismadeHongKong. A.ofin B.fromin C.ofby D.fromon
HouYimissedhiswifeChang'eandherfavoritefruitsanddessertsinthegarden.摆放
﹣MymotherisillinhospitalsoIhavetolookafterher.﹣. A.Itdoesn'tmatter B.I'msorrytohearthat C.That'sOK D.Noproblem
ThemanbemyEnglishteacher.HehasgonetoCanada. A.must B.can't C.may D.shouldn't
﹣WhichcitywouldyouliketoliveinBeijingorShanghai? ﹣.I'dliketochooseKunming. A.Either B.Both C.Neither D.None
﹣﹣﹣IwonderifIcanuseyourdictionarybecauseIlostminelastweek. ﹣﹣﹣. A.Hereyouare B.Soundslikeagoodidea C.NoIwilluseit D.Idon'tcare
MyuncletookeverychancetotalktopeopleinAustraliahewasworkingthere. A.because B.while C.although D.if
Daleisstudyinginuniversityandhewantstobeengineer. A.aa B.aan C.ana D.anan
MostofthestudentsinGrade9hopetomeetsomeandkindteachersinnewschooloneyearlater.knowledge
Tomlikestoplayviolinbuthedoesn'tliketoplayvolleyball.A./the B.thethe C.the/ D.//
MybestfriendJenniferlikesmusiciansplaydifferentkindsmusic. A.when B.what C.which D.who
﹣Canyoutellme? ﹣Yesofcourse. A.howisshedifferent B.whydoesshetreatyoulikethat C.whowasshe D.whatyouaredoing
Sofartheytospeakfourlanguages.Sometimestheythem. A.havelearnedhavemixed B.havelearnedmix C.learnedmix D.learnedmixed
Weallarriveasaswecansothatwehavetimetowarmup. A.earlier B.early C.later D.lately
Hehastofindhislostphoneorhismotherwillhim. A.progress B.present C.punish D.protect
LotsofscientistsareworkinghardsendastronautstoMarsoneday. A.sothat B.inorder C.inorderto D.and
﹣Howaboutthefootballmatchyesterday? ﹣ItwasnotSomefansthoughtitalittle. A.enoughwonderfulboring B.wonderfulenoughboring C.enoughwonderfulbored D.wonderfulenoughbored
MyunclearrivedtheairportthemorningofMay3. A.onat B.aton C.inin D.atin
HetrieshisbesttoavoidinEnglishtestit'sthemainreasonthathesucceededinstudy.犯错误
HeatefoodthismorningandIt'shardforhimtowalkfast. A.toomuchmuchtoo B.toomuchtoomany C.toomanymuchtoo D.toomanymanytoo
Getupearlygooutforsomeandenjoyahealthylife.新鲜的空气
我刚把厨房收拾干净. Ihavejustthekitchen.
TheAdventuresofTomSawyertellshowbadpeopletheiractions. A.giveup B.dependon C.putup D.payfor
﹣﹣﹣goodweatheritis! ﹣﹣﹣Let'sgooutandenjoythesunshine. A.Whata B.What C.How D.Howa
Thomas'shometownwillholdtheHumorFamilycompetitionnextyear.two
热门题库
更多
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
高一下学期数学
教案备课库
高一上学期数学
高一上学期化学
教案备课库
教案备课库