如图,△ADE绕正方形ABCD的顶点A顺时针旋转90°,得△ABF,连接EF交AB于H,则下列结论: ①AE⊥AF;②EF:AF=
:1;③AF2=FH•FE;④FB:FC=HB:EC.正确的是___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e051d14fd6a787387995331f5e6d026.png)
![](https://img.xkw.com/dksih/QBM/2019/4/20/2186353375002624/2189551534809089/STEM/f202b7fe77884591aa4f655ae242b4cf.png?resizew=87)
更新时间:2019-04-24 21:56:54
|
相似题推荐
填空题
|
较难
(0.4)
【推荐1】如图,
,
,
,点
为
上一点,连接
,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba9fcc3b010fd1f911c957e0c292bf49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7850189f2767a1faa116b138f34266bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c88add3ceb3eb4a2bbb457fcc1bc0ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d7f3de376591bff5368849b35724089.png)
![](https://img.xkw.com/dksih/QBM/2022/4/29/2975746062548992/2982516212719616/STEM/a9415057c99547f5b313f0aaae21eb9a.png?resizew=163)
您最近一年使用:0次
填空题
|
较难
(0.4)
【推荐2】如图,已知
中,
,满足
,
,点P从A点出发沿
路径向终点B运动:点Q从B出发沿
路径向终点A运动;点P,Q的速度分别以每秒1个单位长度和每秒3个单位长度的速度同时开始运动,两个点都要到达相应的终点时才能停止运动,分别过P,Q作
于E,
于F.设运动时间为t秒,当以P,E,C为顶点的三角形与以Q,F,C为顶点的三角形全等时,t的值为 ___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f186ea827f7becafd1ac4955e22c6812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b939af5ba06e279cce39396aaf0fae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d0984bb4715e5e6100153012ddc5c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7012d1ff11db5e150182e19646814cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/720a9d0830aaa9d7ebb8af173e9da83e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a320accba1baa44d2d8a5a3c34307f3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/24/797a2cd2-f988-44ca-bf5f-5383e7f4afdc.png?resizew=161)
您最近一年使用:0次
填空题
|
较难
(0.4)
【推荐1】如图,
为等边三角形,点
在直线
上运动,连接
,将线段
绕点
顺时针旋转
得到
,连接
,若
,则
的最小值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/ddbd3edc-d065-4b5a-99a9-f0801615a339.png?resizew=153)
您最近一年使用:0次
填空题
|
较难
(0.4)
名校
【推荐2】如图,
为等边
的外接圆,点
在劣弧
上运动(不与点
重合),连接
.则
的度数为______ .若
的面积是
,则
的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](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/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342ba1917a6b854ad111a3e6f5514934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868ff1350bd72625328c85c3097cd85e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27567d43c5b91382ee3d7ca708ee422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94773f515ba3c49295b77b178f2df4d1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/d35142fe-bcca-485f-89ea-ef7bf979fd42.png?resizew=141)
您最近一年使用:0次
填空题
|
较难
(0.4)
【推荐1】如图,
是矩形
内的任意一点,连接
,
,
,
,得到
,
,
,
设它们的面积分别是
,
,
,
,给出如下结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/22/63fa27f5-c682-4c9e-91cd-15548d68900b.png?resizew=155)
;
;
若
,则
;
若
,则点
必在矩形的对角线上.
其中正确结论的序号是_______________
把所有正确结论的序号都填在横线上
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b5db5513a92f9641543e525176fe67.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/0f30f56664446f32dbbc2c5f12a99374.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/22/63fa27f5-c682-4c9e-91cd-15548d68900b.png?resizew=155)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7a724a5d8b99b81ef670feb10df1788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da0eee34450c867c9aa5d27c2f49c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82e415812cca9545611c0faa0c01b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad351432bd46e0fbeabf368e0ab55d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10195d68eb62e0fc5f7d6d0c83da44dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8b8edd94bc4d5d517ec77e56800e41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31dd78e9156dcf6db93f6cbcc5b43b14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
其中正确结论的序号是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
您最近一年使用:0次
填空题
|
较难
(0.4)
名校
【推荐2】如图,在中,
,
,
,点D为AB上一点,且
,点E为AC上一动点,连接ED,过点D作
,交直线BC于点F,点G为EF的中点,当点E从点A运动到点C,点G的运动路径长为
您最近一年使用:0次