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Rt△ABC中,∠ACB=90°,∠B=30°,BC=3.点D是BC边上的一动点(不与点B、C重合),过点D作DE⊥BC交AB于点E,将∠B沿直线DE翻折,点B落在射线BC上的点F处.当△A...
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
如图在Rt△ABC中∠ACB=90°AC=BC=1将Rt△ABC绕A.点逆时针旋转30°后得到Rt△
如图N44在Rt△ABC中∠ACB=90°∠
=30°,CD⊥AB于点D.则△BCD与△ABC的周长之比为( ) A.1∶5
1∶4
1∶3
1∶2
如图Rt△ABC中∠ACB=90°∠ABC=30°AC=1将△ABC绕点C.逆时针旋转至△A.′B.
如图在Rt△ACB中∠ACB=90°∠
=25°,点D.是AB上一点.将Rt△ABC沿CD折叠,使
点落在AC边上的点B.′处,则∠ADB′等于( )
A.25° B.30°
35°
40°
如图在Rt△ABC中∠ACB=90°∠A=30°BC=2.将△ABC绕点C旋转得到△EDC使点D在A
如图在Rt△ABC中∠ACB=90°AC=BC=1将Rt△ABC绕A.点逆时针旋转30°后得到Rt△
如图在Rt△ABC中∠ACB=90°AC=BC=1将Rt△ABC绕A.点逆时针旋转30°后得到Rt△
如图已知Rt△ABC中∠ACB=90°CD是高∠
=30°,BD=2cm,求AB的长( )
A.4
6
8
10
如图在Rt△ABC中∠ACB=90°AB的垂直平分线DE交AC于E交BC的延长线于F若∠F=30°D
如图在Rt△ABC中∠ACB=90°∠ABC=30°将△ABC绕点C.顺时针旋转至△
′
′
,使得点A.′恰好落在AB上,则旋转角度为( ) A.30° B.60° C.90°
150°
如图所示在Rt△ABC中∠ACB=90°∠B.=30°ED是BC的垂直平分线请写出图中两条相等的线段
如图在Rt△ABC中∠ACB=90°CD⊥AB于点D.点E.是AB的中点∠BCD=20°则∠ACE=
20°
30°
45°
60°
如图在Rt△ABC中∠ACB=90°∠B=30°CD是斜边AB上的高AD=3cm则AB的长度是
3cm
6cm
9cm
12cm
如图在Rt△ABC中∠ACB=90°AC=BC=2将Rt△ABC绕点A.逆时针旋转30°后得到Rt△
如图在Rt△ABC中∠ACB=90°AB的垂直平分线DE交AC于E交BC的延长线于F若∠F=30°D
如图在Rt△ABC中∠ACB=90°DEDF是△ABC的中位线连接EFCD.求证EF=CD.
如图已知在Rt△ABC中∠ACB=90°∠B.=30°C.D.⊥AB于D.求证AD=AB
如图Rt△ABC中∠ACB=90°DE过点C.且DE∥AB若∠ACD=50°则∠B.的度数是
50°
40°
30°
25°
如图Rt△ABC中∠ACB=90°CD⊥AB于D.∠ACD=40°则∠B.=
如图所示在Rt△ACB中∠ACB=90°∠A=25°D.是AB上一点.将Rt△ABC沿CD折叠使B.
25°
30°
35°
40°
热门试题
更多
—Howlongwillyouneedtofinishyourtask?—Ithinktwohoursenough.A.is B.are C.was D.were
Thebigtreeinfrontofmyroombymyfathermanyyearsago. A.planted B.wasplanted C.planted D.hadbeenplanted
Knowinghowtouseproperlanguagecanhelpyoubecomegoodatcommunicating.
—Mollyhaschangedsomuch!Shebeshyandquiet.—Yes.Butnowshespeakinginfrontofherclass.A.usedto;isusedto B.isusedto;usedto C.usedto;usedto D.usedfor;isusedto
Mymotherlaidallthemeatandvegetablestoprepareforahotpotdinner.
smokeisn'tallowedhere.
Letmetakeyourtemperaturetoseeifyouhavea.
Youwon'tachieveyourdreamyoureallymakeupyourmindtomakeit A.until B.when C.if D.after
Susanwantstohernewfriendstoherbirthdayparty.
NextweekI'llgoforapicnic. A.interestingsomewhere B.somewhereinteresting C.somewhereinterested D.tosomewhereinteresting
Mymotherdoesn'twantmetomoreweight.A.putup B.puton C.putoff D.putaway
Tinadidn'tfallsleepuntil11o'clock.
Booksaremadepaperwhilepaperismainlymadewood.A.of;of B.from;from C.of;from D.from;of
It'ssodarkthatwecan'tgotheforest.A.through B.across C.cross D.past
—Canyoucomeandplayfootballwithme? —.Ihavealotofhomeworktodo. A.I'dliketo B.I'mafraidso C.It'sapleasure D.I'mafraidnot
Thepriceoffooddrinksandclothessoquicklytheseyears.A.develops B.speed C.space D.increases
Theairwasfilledwiththeofflowers.
meacallbeforeyoucometoChangchun.I'llmeetyouatthestation.A.Give B.Giving C.Togive D.Gave
Hereapairofglovesforyoutowear.A.are B.is C.were D.be
Asadultyoushouldthinkupyourownideas.A.a B.the C./ D.an
SingaporeisAsiancountry.Theweatherthereisthesameallyearround. A.a B.an C.the D./
Wechatisverypopulartheyoungtheoldaregettinginterestedinit.A.neither;nor B.either;or C.notonly;butalso D.between;and
Ireallythewayshebroughtupthosekidsallonherown.
ItbeMr.Smith.HehasgonetoAmerica. A.can B.can't C.must D.might
Theteacheraskedustocirclethe answers.
Asweallknowapersonlearnsmanythingsbymakingmistakesandthem.A.corrects B.correct C.corrected D.correcting
Nobodywasfromtheclassthoughitrainedheavilyyesterday.
Awoman'sageisa subjectinEngland.
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
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