AC是菱形ABCD的对角线,点E、F分别在边AB、AD上,且BE=DF.
求证:△ACE≌△ACF.
求证:△ACE≌△ACF.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/38ed69fd-598f-4e83-b485-bedfcdfdcc8f.png?resizew=178)
更新时间:2019-01-18 12:02:29
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【知识点】 利用菱形的性质求线段长解读
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解答题-作图题
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适中
(0.65)
【推荐1】已知:如图,
中,
,点
是
边上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/3/6e68ee8e-808f-45aa-8112-c896812edacf.png?resizew=128)
(1)尺规作图:以
为对角线作平行四边形
(要求:保留作图痕迹,不写作法);
(2)填空:当
时,平行四边形
是菱形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d115bdfd7f87cde0297d9a7100b1dde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/3/6e68ee8e-808f-45aa-8112-c896812edacf.png?resizew=128)
(1)尺规作图:以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f09ef81ca026939dc972aac1cfb958.png)
(2)填空:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c978d92edf0c4c1ef8620c17df75d35e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f09ef81ca026939dc972aac1cfb958.png)
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解答题-证明题
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适中
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名校
【推荐2】如图,在边长为6的菱形ABCD中,点M是AB上的一点,连接DM交AC于点N,连接BN.
(1)求证:△ABN≌△ADN;
(2)若∠ABC=60°,AM=4,∠ABN=a,求点M到AD的距离及tana的值.
(1)求证:△ABN≌△ADN;
(2)若∠ABC=60°,AM=4,∠ABN=a,求点M到AD的距离及tana的值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/18/1cbaa139-afca-4158-a6f9-a9499b77ba81.png?resizew=209)
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