如图,
中,
平分
交
于点E.若
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/14/1f46e932-7253-42fe-9f1a-1bf588d67358.png?resizew=172)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d9fb806bf3862d351dc4e4ffa3a2283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f594898ac298fb28edc09796ad3ca899.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/14/1f46e932-7253-42fe-9f1a-1bf588d67358.png?resizew=172)
A.3 | B.5 | C.8 | D.2 |
更新时间:2022-05-14 01:58:25
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【推荐1】如图,一把长方形直尺沿直线断开并错位,点E、D、B、F在同一条直线上,若∠ADE=125°,则∠DBC的度数为()
A.55° | B.65° | C.75° | D.125° |
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【推荐2】如图,
相交于点O,
,
,有如下四个结论:
①
;②
;③
;④
.
上面结论中,所有正确结论的序号是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/1/530e89a0-1c01-410d-be2f-785e48e8c30d.png?resizew=127)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989c75a3fd02e4971cab421c88de92f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89a3d990cebd566ea9ffe1787634c83d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f716c6fc2918a0b2a75c32792100b7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7266c2e4c22773b6f4816e8f99a54040.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb34d917a073024625616e4edf22016.png)
上面结论中,所有正确结论的序号是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/1/530e89a0-1c01-410d-be2f-785e48e8c30d.png?resizew=127)
A.①② | B.①②④ | C.①②③ | D.①②③④ |
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【推荐1】如图,在Rt△ABC中,∠B=90°,AD平分∠BAC,DE垂直平分AC,若△ADC的面积为4,则△ABC的面积为( )
![](https://img.xkw.com/dksih/QBM/2022/1/16/2895513634144256/2934629497978880/STEM/25b71036-b8f6-4127-aef6-0d964b7c3a38.png?resizew=144)
![](https://img.xkw.com/dksih/QBM/2022/1/16/2895513634144256/2934629497978880/STEM/25b71036-b8f6-4127-aef6-0d964b7c3a38.png?resizew=144)
A.5 | B.6 | C.7 | D.8 |
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【推荐2】如图,在
上求一点
,使它到边
,
的距离相等,则
是( )
![](https://img.xkw.com/dksih/QBM/2023/12/27/3398224950738944/3398453843099648/STEM/02d6a077de3b48329dc54c848df9adbc.png?resizew=125)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2023/12/27/3398224950738944/3398453843099648/STEM/02d6a077de3b48329dc54c848df9adbc.png?resizew=125)
A.线段![]() | B.![]() ![]() ![]() |
C.![]() ![]() | D.![]() |
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【推荐1】如图,已知线段
,
作等腰
,使
,且
,
边上的高
.张红的作法如下:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/15/f677492d-81c4-449a-9b83-6c1b20d46894.png?resizew=234)
(1)作线段
;
(2)作线段
的垂直平分线
,
与
相交于点
;
(3)在直线
上截取线段
;
(4)连结
,
,则
为所求的等腰三角形.
上述作法的四个步骤中,有错误的一步你认为是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e781a2489271bfd1597cba1bb6f5887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61d22f065ec04de109d913e8e7855110.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/15/f677492d-81c4-449a-9b83-6c1b20d46894.png?resizew=234)
(1)作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e781a2489271bfd1597cba1bb6f5887.png)
(2)作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
(4)连结
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
上述作法的四个步骤中,有错误的一步你认为是( )
A.(1) | B.(2) | C.(3) | D.(4) |
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【推荐2】如图,在
的面积是
,
的垂直平分线
分别交
,若点F为
边的中点,点P为线段
上一动点,则
周长的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55bc092c528ffca7b2dc4a9113f7c205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ed533272ac9d01f1ce3e741b034d4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150fe3137f76a6f05d9148c7d8c1810e.png)
A.7 | B.9 | C.![]() | D.![]() |
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【推荐1】如图,在
中,
平分
交
于点
,若
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab642bee3d5db147a12df2cac5f5fbd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a55a1a244f81097e05e715b69580faa.png)
A.30° | B.35° | C.40° | D.45° |
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【推荐2】平行四边形不一定具有的性质是( )
A.对角线相等 | B.对角相等 | C.对边平行且相等 | D.对边相等 |
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