如图,在
中,
,
,
的垂直平分线分别交
与
于点D和点E.若
,则
的长是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/4/0d29197e-ed62-4a65-9c43-dbe83a667c39.png?resizew=210)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/0761165f1176f3a5fe4f7b052832316d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/4/0d29197e-ed62-4a65-9c43-dbe83a667c39.png?resizew=210)
A.4 | B.4![]() | C.2 | D.8![]() |
更新时间:2023-02-28 22:00:41
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【推荐1】如图,AD是△ABC的角平分线,DF⊥AB,垂足为点F,DE=DG,△ADG和△AED的面积分别为27和16,则△EDF的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/f78da327-3cb7-4e25-96c4-116bcb2a94a3.png?resizew=132)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/f78da327-3cb7-4e25-96c4-116bcb2a94a3.png?resizew=132)
A.11 | B.5.5 | C.7 | D.3.5 |
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【推荐2】如图,在
中,
,
,
是
的角平分线,若
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673ef2d48215ca84a48377f17d6df00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
A.7 | B.8 | C.![]() | D.![]() |
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【推荐1】如图,在
中,
,P为
上一点(不与点B,C重合).在
上找一点M,在
上找一点N,使得
与
全等,以下是甲、乙两位同学的作法.
甲:连接
,作线段
的垂直平分线,分别交
,
于M,N两点,则M,N两点即为所求.
乙:过点P作
,交
于点M,过点P作
,交
于点N,则M,N两点即为所求.
对于甲、乙两人的作法,下列判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ffc5fb090753d992c22368d8fb318a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
甲:连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
乙:过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8f0e72758db1d4e01c359fadf5c6a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3cd3fc7f78d5aacf6ab13a4179b978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
对于甲、乙两人的作法,下列判断正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/13/899d996f-63ec-4fa7-98a4-4aa619456976.png?resizew=147)
A.两人都正确 | B.甲正确,乙错误 |
C.甲错误,乙正确 | D.两人都错误 |
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【推荐2】如图,顶角A为120°的等腰△ABC中,底边BC为
,DE垂直平分AB于点D,则AE的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbd3e8cf8325999cde03adf845d3dd0.png)
A.2![]() | B.2+![]() | C.![]() | D.3![]() |
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【推荐1】如图,是一束平行的光线从教室窗户射入教室的平面示意图,测得光线与地面所成的角
,窗户的高在教室地面上的影长
米,窗户的下檐到教室地面的距离
米(点
、
、
在同一直线上),则窗户的高
为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/cbe30dc7-48c4-46b9-bb22-e9df97d7302d.png?resizew=182)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eb37725b8bb43fdc74a7d797dbd064d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b0dfa6898f9560ab8a5e5905c1f81f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/cbe30dc7-48c4-46b9-bb22-e9df97d7302d.png?resizew=182)
A.![]() | B.1米 | C.![]() | D.2米 |
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【推荐2】如图,在直角坐标系中,菱形
顶点A,B,C在坐标轴上,若点B的坐标为
,
,将
绕点O顺时针旋转得到
,当
恰好第一次落在线段
上时,
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b3c94d505e7c5bcce94afec4af3d92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a9354a07397b21c33820fc2590e814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b19af66718fd3a75ad7802bfabadecc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,在正方形
中,点E是
的中点,点F是
的中点,
与
相交于点P,设
.得到以下结论:①
;②
;③
.则上述结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8290323a3da9d76a509ba5d14daabe97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a93b9e58955cd81f6d2444a284c58be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8b78206bf1aa805909737cd1999cea5.png)
A.①② | B.①③ | C.②③ | D.①②③ |
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【推荐2】如图,在矩形
中,
,
,点
、
、
、
分别在矩形
的各边上,
,则四边形
的周长是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/24/8d86575a-e5db-478e-80ed-df90f7fc612c.png?resizew=152)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1252dcbbc74432ce91f7fa99483c5cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/24/8d86575a-e5db-478e-80ed-df90f7fc612c.png?resizew=152)
A.![]() | B.13 | C.![]() | D.![]() |
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