如图,点
是等边三角形
内部一点,连接
、
、
,且
,现将
绕点
顺时针旋转到
的位置,对于下列结论:①
是等边三角形;②
;③
;④
.其中结论正确的是__________ (填序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c3fe3eddc09024fdbce00cd08ab4b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9524e3810e06dc781285f1289e75d653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f517953a21c2a45fd8465072c44bfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90de825299eb86f8661b70a8accfa596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02413d06ae10743c4ae0748ef02a2131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f4cb33cdb3e2994ac7b9a0abbabed2.png)
![](https://img.xkw.com/dksih/QBM/2022/1/8/2897166123499520/2916338960744448/STEM/4d2810f6ec5f4bc8bb9777e32017da20.png?resizew=177)
更新时间:2022-02-14 18:09:42
|
相似题推荐
填空题
|
适中
(0.65)
【推荐1】如图,在
中,
,
,点
、
分别在
边和
边上,作线段
的垂直平分线
交
边于
,满足
,
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6fdecc899f66d582f609fa88de9aa54.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41bef89ac0dd5ae192cd9c7222d5041b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46249b2ef3b00e7d6c354ab59c6913f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3def7e431683c0adfb0a9f391c961a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6fdecc899f66d582f609fa88de9aa54.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/3c9593f3-4c7c-4f01-b14c-51220159fe5b.png?resizew=112)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐1】如图,已知
是半圆
的直径,
、
是半圆
上的两点,且
,
与
交于点
,若
是
中点,,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802a939a9ab14a1a762a4275c9ec6899.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8dccfaf49b0f8e0fd927f30a50cdfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802a939a9ab14a1a762a4275c9ec6899.png)
![](https://img.xkw.com/dksih/QBM/2020/3/25/2427095831044096/2427361556152320/STEM/20ce4edee0674a79a89456a6010d3a02.png?resizew=151)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】如图,在
中,
,
,
,
是斜边
上方一点,连接
,点
是
的中点,
垂直平分
,交
于点
,连接
,交
于点
,当
为直角三角形时,线段
的长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8807117d0d649419fdda04c531cdc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb01d2b57580731c8b807ac8cffc8ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd91572cca65c8c052090976e9d1a6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/2020/12/10/2611072430661632/2614878165630976/STEM/e4e03896fd804ec68d95c6ffb1658bb2.png?resizew=336)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】如图所示,以
的三边为边长分别向外作正方形,正方形的面积分别记为
,
,
.如果
,那么
的形状是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/485fd8aa254b523bef30560500ccaf41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://img.xkw.com/dksih/QBM/2020/11/24/2599815327924224/2600760035803136/STEM/60c740e80bf44e92bc729521be30c981.png?resizew=88)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐1】如图,在Rt△ABC中,∠ACB=90°,∠A=18°,将△ABC绕点C按顺时针方向旋转后得到△EDC,
此时点D在AB边上,则旋转角的大小为_______ .
此时点D在AB边上,则旋转角的大小为
![](https://img.xkw.com/dksih/QBM/2017/5/17/1689043167338496/1719662019207168/STEM/899ba0ad13ee46bd8f51fbe3ed97579d.png?resizew=136)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】如图,直线l⊥OA垂足为点O,点B在直线l上一动点,△ABC是等边三角形,连结OC,已知OA=6,则OC的最小值是________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/3/abfe0226-afcd-4900-84b0-6966cebb5bd9.png?resizew=251)
您最近一年使用:0次