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,在中,E为边AB上一点,连结DE,将沿DE翻折,使点A的对称点F落在边CD上,连结EF.求证:四边形ADFE是菱形.
查看本题答案
包含此试题的试卷
教案备课库《2016—2017学年度下学期八年级质量监测(二)•数学》真题及答案
点击查看
你可能感兴趣的试题
如图Rt△ABC中∠ACB=90ºAC=3BC=4将边AC沿CE翻折使点
落在AB上的点D.处;再将边BC沿CF翻折,使点
落在CD的延长线上的点B.′处,两条折痕与斜边AB分别交于点E.F.,则线段B.′F.的长为 ( ) A.
B.
在Rt△ABC中∠ACB=90°BC=15AC=20.点D.在边AC上DE⊥AB垂足为点E.将△AD
如图正方形ABCD中AD=4点E.是对角线AC上一点连接DE过点E.作EF⊥ED交AB于点F.连接D
如图在Rt△ABC中∠C.=90°BC=2AC=2点D.是BC的中点点E.是边AB上一动点沿DE所在
如图四边形ABCD是一张矩形纸片AB=6AD=8在AB上取一点E将纸片沿DE翻折使点A落在BD上的
如图四边形ABCD是一张矩形纸片AD=2AB若沿过点D.的折痕DE将A.角翻折使点A.落在BC上的A
如图在中AB>ADE为边AB上一点连接DE将沿DE翻折使点A的对称点F落在边CD上连接EF.求证四边
如图在Rt△ABC中AC=8BC=6点D为斜边AB上一点DE⊥AB交AC于点E将△AED沿DE翻折
如图在△ABC中D.是边BC上一点AD平分∠BAC在AB上截取AE=AC连结DE已知DE=2cmBD
如图已知等边△ABC中点D.E.分别在边ABBC上把△BDE沿直线DE翻折使点B.落在点B.ˊ处DB
.已知等边△ABC中点D.E.分别在边ABBC上把△BDE沿直线DE翻折使点B.落在点B.ˊ处DBˊ
在⊙O中AB为直径点C为圆上一点将劣弧沿弦AC翻折交AB于点D连结CD.1如图1若点D与圆心O重合A
如图等边△ABC中AB=5D.E.分别是BCAC上的点将△EDC沿直线DE翻折后点C.落在点C.'处
如图在矩形ABCD中E是BC边上的点连接AE.DE将△DEC沿线段DE翻折点C恰好落在线段AE上的点
如图在Rt△ABC中∠ACB=90°∠B.=30°BC=3点D.是BC边上一动点不与点B.C.重合过
在⊙O.中AB为直径点C.为圆上一点将劣弧沿弦AC翻折交AB于点D.连结CD.1如图1若点D.与圆心
如图在△ABC中点D为BC边的中点点E为AC上一点将∠C沿DE翻折使点C落在AB上的点F处若∠AE
如图四边形ABCD表示一张矩形纸片AB=10AD=8.E是BC上一点将△ABE沿折痕AE向上翻折点B
如图平面直角坐标系xOy中矩形OABC的边OAOC分别落在xy轴上点B坐标为64反比例函数y=的图
OC分别落在x.y轴上,点B坐标为(6,4),反比例函数y=
的图象与AB边交于点D,与BC边交于点E,连结DE,将△BDE沿DE翻折至△B'DE处,点B'恰好落在正比例函数y=kx图象上,则k的值是( )
A.
如图矩形OABC的边OAOC分别在x轴y轴上点B的坐标为32点DE分别在ABBC边上BD=BE=1
(1,2)
(2,1)
(2,2)
(3,1)
热门试题
更多
ThetrainfromTianjinanhourago.A.arrived B.hasarrived C.wasarriving D.arrivedat
Sheasananimaltrainersince2003.A.hasworked B.works C.hadworked D.worked
BesuretoletTomknowthenoticeassoonashe.A.willarrive B.wasarriving C.arrives D.arrived
Themanhishometownforthirtyyears.A.left B.hasleft C. hasbeenawayfrom D.hadleft
Itoutside.You'dbettertakeanumbrellawithyou.A.rains B.israining C.rained D.hasrained
—Whatanicebike!Howlongyouit?—Justtwoweeks.A. will;buy B.did:buy C.are;having D.have;had
TheOrientalPearlTVTowertensofthousandsofvisitorssince1995.A.attracted B.attracts C.hasattracted D.willattract
Idon'tknowwhatheatthemoment.A.isdoing B.isworking C.does D.did
Whentheteachercameinthestudentsloudly.A.talk B.aretalking C.weretalking D.willtalk
—HowlongcanIthebook?—Forthreeweeks.Butyoucan’tlendittoothers.A.see B.borrow C.keep D.look
Herdreamtobeadancerwhenshewas12yearsold.A.comereal B.cometrue C.camereal D.cametrue
WeacrywhileweTVlastnight.A.heard;werewatching B.werehearing;wouldwatchC.werehearing;watch D.heard;watched
Whydidn'tyougotothemoviesyesterday?—BecauseIitbefore.A.saw B.haveseen C.watched D.wasseen
Thezookeeperisworriedbecausethenumberofvistorssmallerandsmaller.A.become B.became C.isbecoming D.havebecame
Happinessinhergrandfather'seyeseverytimehehearshervoice.A.shines B.isshone C.hasshone D.wasshone
—HellomayIspeaktoyourfatherplease?—SorrymyfatherhasgonetoShanghai.Hetherethismorning.A.goes B.went C.hasbeen D.go
WangLinandZhouHongforuswhenwegottotheschoolgate.A.iswaiting B.werewaiting C.arewaiting D.waswaiting
Whynotcomeoverattheweekend?Myfamilyseeingyouagain.A.enjoyed B.wouldenjoy C.willenjoy D.haveenjoyed
MissGaoisn'there.ShetothebusstationtomeetMrBrown.A.go B.hasgone C.hasbeen D.wouldgo
We’llgotoplaywithsnowifittomorrow.A.snow B.snows C.willsnow D.snowed
—OhMrs.Kingyourdresslooksnice.Isitnew?—NoIitsincetwoyearsago.A.had B.bought C.havehad D.havebought
JoanTomwithhislessonsthistimeyesterday.A.wasgoingtohelp B.washelping C.wouldhelp D.hashelped
Myyoungerbrotherthearmy1990.A.joined;at B.joined;in C.hasjoined;in D.hasjoined;since
—HiJim!Nicetomeetyou!—Hiit’soneyearsinceIlastyou.A.saw B.see C.seeing D.haveseen
IthefilmwithyoubecauseIhaveseenittwice.A.willsee B.won’tsee C.saw D.didn’tsee
Hefromhomeforalongtime.A.hasgoneaway B.hadgoneaway C.hasleft D.hasbeenaway
Thefilmforhalfanhour.A.hasbegun B.hasbeenbegun C.hasbeenon D.began
Hewasstillworkingonhisprojectwhileotherpeoplearest.A.werehaving B.arehaving C.willhave D.have
TheSmithsdinnerwhentheearthquakehappened.A. have B. arehaving C.had D.werehaving
—Howisyourfather?Ihimforalongtime.—Heisfinethanks.A.don’tsee B.hadn’tseen C.didn’tsee D.haven’tseen
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
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
教案备课库
高一上学期物理
教案备课库