如图,点P是等边三角形
内一点,将
绕点C逆时针旋转
得到
,连接
,若
,下列结论:①
;②
;③
,其中一定 成立的是______ (填序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0edc7789bd2685a6e357b4b8c61e26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24815f163f6807dfd254b364d8982bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7944917eedfec9b75ee1a1d642912c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec029eb017847297a522b6e92c497f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6172e92e38470e868f2e79caaf5478bf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/18/58f5683a-2dc8-438e-9ad1-6f919d51cade.png?resizew=158)
更新时间:2022-12-18 15:17:58
|
相似题推荐
填空题
|
适中
(0.65)
名校
【推荐1】如图,已知正方形ABCD中,点E,F分别在边CD,BC上,连接AE,DF.若
,DE=BF,则AE+DF的最小值为 _____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca38f8c4ffb562974fbd24699444a3fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/1/98b8aeba-3e86-4740-8a0b-d185bee0a428.png?resizew=141)
您最近一年使用:0次
填空题
|
适中
(0.65)
名校
【推荐2】添加辅助线是很多同学感觉比较困难的事情.如图1,在
中,
,BD是高,E是
外一点,
,若
,
,求
的面积.同学们可以先思考一下…,小颖思考后认为可以这样添加辅助线:在BD上截取
,(如图2).同学们,根据小颖的提示,聪明的你可以求得
的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb41a3ea622ea1c73715622384040e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d666a767f1d57adeae2c538c94c0f21c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64bd8f413593d928d11052ffa461920e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03687d97d61b4a7cecbb73f2a6604212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
您最近一年使用:0次
填空题
|
适中
(0.65)
名校
【推荐1】如图,
是等边三角形,
是
延长线上一点,
于点
,交
于点
,若
,
,则
的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a01b20e9357459dad16e644aac9c17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2176dac04a8b410e319342fb8e895b1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/1c10a629-3450-43e8-acdb-1c7787315086.png?resizew=186)
您最近一年使用:0次
填空题
|
适中
(0.65)
名校
【推荐2】如图,已知
,点
,
,
,……在射线
上,点
,
,
,……在射线
上,
,
,
,……均为等边三角形,若
,则
的边长为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dccdde392870e54b3ad23c357a9be1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9721059d158853671eaf19e39769b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8db4b168ddbcba90ac9b31d36a0432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0709502551b86b7ae008cb6d7c2ec8c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0758f3ff9f1f7109024c1ef65536c58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcfae259f4d3fe55be91c4480d24c5b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/743833733ea93405e7b026804b4d757a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77d199fa2bc721783ffd4bacb4be70e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87b260a218a30dd2a171462a53fcdd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c07ec2cc424c61462c9b29db2e8d1f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18b7eac1c4db5c39554d9f80ddd3bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b73ba7155b6eb7352dacb43cf77fa49.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/37c5b2f2-5a2f-4f3c-b51f-036fb5b9fb7f.png?resizew=181)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐1】如图,
与
的边
相切,切点为
.将
绕点
按顺时针方向旋转得到
,使点
落在
上,边
交线段
于点
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2564c7e5e5c6e7e1f5b3f8266f30661b.png)
_________ 度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dabe8be93ab57287ca5751ca98fce8ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e663220a66eff19da6a71e46b397db2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27debd3c36f637382dfe0bd18134d63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2564c7e5e5c6e7e1f5b3f8266f30661b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/8/0dd37fd1-1ed0-459c-8d97-275fcaee60a5.png?resizew=199)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】如图,∠ACB=90°,将
绕点
顺时针方向旋转
到
的位置,
的中点
旋转到
,已知
,
,则
周长为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a71399ec88d4a3bd807e23bef04dce6.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/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc00551373cf18100b6cc253c423426.png)
![](https://img.xkw.com/dksih/QBM/2021/10/9/2825368719925248/2826431972302848/STEM/d2c19d45-272c-4b61-9358-54b989f96ed6.png)
您最近一年使用:0次