如图,已知:在等腰
中,
,BE平分
,交AC于F,且
于点E,BC边上的中线AD交BE于G,连接DE,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/2020/3/12/2417904054394880/2417968300761088/STEM/52be0d7bcbbc4d62b820e55b9e8ac22b.png?resizew=235)
①
;②
;③
;④
;⑤![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bbd676d54aead1234eb5aac8f6da25d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/133f14539e3090e18427017ff212d933.png)
![](https://img.xkw.com/dksih/QBM/2020/3/12/2417904054394880/2417968300761088/STEM/52be0d7bcbbc4d62b820e55b9e8ac22b.png?resizew=235)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0af831d8dd327f64c00f13ecd0e2625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/043bd614be04d2a77a4eb2736606d56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd86d7561bafcbc8ae785e995ca5ec96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82fb3081deb14e3496b3d0329c24d45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bbd676d54aead1234eb5aac8f6da25d.png)
A.①②③④ | B.①②③⑤ | C.①②④⑤ | D.②③④⑤ |
19-20八年级上·浙江杭州·期末 查看更多[3]
更新时间:2020-04-01 02:43:23
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相似题推荐
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适中
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【推荐1】如图,在
中,以点
为圆心,适当长为半径画弧,分别交
,
于点
,
.分别以点
,
为圆心,大于
长为半径画弧,交于
内一点
.连结
并延长,交
于点
.连结
,
.
强强得出的结论是:当
时,
;
晴晴得出的结论是:当
时,
;
琪琪得出的结论是:当
时,
.
根据这三个人的结论,判断下面说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65026a6b6402cb599e14be8023a3f6a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
强强得出的结论是:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f4a417438c65f735af3a1aec760186.png)
晴晴得出的结论是:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eb5de7ac3b81d4bb5d79708f65034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f4a417438c65f735af3a1aec760186.png)
琪琪得出的结论是:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe3865df6e6ec4d3bf6bc66079e02c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f4a417438c65f735af3a1aec760186.png)
根据这三个人的结论,判断下面说法正确的是( )
A.只有强强和琪琪得出的结论都对 | B.只有强强和晴晴得出的结论都对 |
C.只有晴晴和琪琪得出的结论都对 | D.这三个人得出的结论都对 |
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名校
【推荐2】如图,在四边形ABCD中,AB=CD,角线AC与BD交于点O,AF⊥BD于点F.CE⊥BD于点E.连接AE,CF.若DE=BF,则下列结论:
①CF=AE;
②OE=OF;
③四边形ABCD是平行四边形;
④图中共有四对全等三角形.
其中正确结论有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/3/6d856b5b-9992-4426-9fcf-e1dbe905fde1.png?resizew=136)
①CF=AE;
②OE=OF;
③四边形ABCD是平行四边形;
④图中共有四对全等三角形.
其中正确结论有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/3/6d856b5b-9992-4426-9fcf-e1dbe905fde1.png?resizew=136)
A.①③④ | B.①②④ | C.①②③ | D.②③④ |
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【推荐1】如图,在∠MON中,以点O为圆心、任意长为半径作弧,交射线OM于点A,交射线ON于点B,再分别以A,B为圆心、OA的长为半径作弧,两弧在∠MON的内部交于点C,作射线OC,连接AB,AC.若OA=10,AB=12,则点B到AC的距离为( )
![](https://img.xkw.com/dksih/QBM/2021/7/26/2772373077983232/2778041078251520/STEM/27766803-62aa-4b98-a68a-8b2ed605edff.png?resizew=261)
![](https://img.xkw.com/dksih/QBM/2021/7/26/2772373077983232/2778041078251520/STEM/27766803-62aa-4b98-a68a-8b2ed605edff.png?resizew=261)
A.![]() | B.4 | C.5 | D.![]() |
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【推荐2】如图,
的两条角平分线
和
交于点
,且点
到
的距离
,
的周长为
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbbecbd7e92dcbe1766462fcf40066de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,
为
的直径,
为
延长线上的一点,
在
上(不与点
,点
重合),连结
交
于点
,且
,设
,
,下列说法正确的是( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/16/5beee9da-b856-4a8f-a4ab-3b94696e59d9.png?resizew=175)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2883e8d5eb46991be74fa91633aa65d5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/16/5beee9da-b856-4a8f-a4ab-3b94696e59d9.png?resizew=175)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,AD是
的中线,E是AD上一点,连接BE并延长交AC于点F,若EF=AF, BE=7.5, CF=6,则EF=( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
A.2.5 | B.2 | C.1.5 | D.1 |
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【推荐1】如图,A,B两地被池塘隔开,小明通过下列方法测出了A,B间的距离:先在AB外选一点C,然后测出AC,BC的中点M,N,并测量出MN的长为12m,由此他就知道了A,B间的距离.有关他这次探究活动的描述错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/29/af369a5b-aa20-441c-b65e-9763c8d29e2e.png?resizew=236)
A.S△CMN=![]() | B.CM:CA=1:2 |
C.MN∥AB | D.AB=24m |
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【推荐2】如图,
,
,点M是线段
上一个动点,连接
,将线段
沿直线
进行翻折,点A落在点N处,连接
,以
为斜边在直线
的左侧(或者下方)构造等腰直角三角形
,当M从点A运动到点C时,点D的运动总路径长是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45615266b2e65102351ecb676e2f426d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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