如图,在△ABC中,∠ABC=45°,CD⊥AB,BE⊥AC,垂足分别为D,E,F为BC中点,BE与DF,DC分别交于点G,H,连接CG,∠ABE=∠CBE.
(1)求证:BH=AC;
(2)若BG=5,GE=4,求线段AE的长.
(1)求证:BH=AC;
(2)若BG=5,GE=4,求线段AE的长.
![](https://img.xkw.com/dksih/QBM/2018/7/3/1980696734064640/1982016722149377/STEM/d7bf0dd0e2704911a088f7d27488cf9e.png?resizew=160)
更新时间:2018-07-05 16:46:15
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解答题-问答题
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适中
(0.65)
【推荐1】如图,对称轴为直线
的抛物线
与x轴交于A、B两点,与y轴交于C点,且
.
(1)求抛物线的解析式;
(2)抛物线顶点为D,直线
交y轴于E点;
①设点P为线段
上一点(点P不与B、D两点重合),过点P作x轴的垂线与抛物线交于点F,求
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上是否存在点Q,使得
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(1)求抛物线的解析式;
(2)抛物线顶点为D,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
①设点P为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e64c953aaf341e772a5fe776fbc78a.png)
②在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3d0248dffe6123f6b0115eb7783773.png)
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解答题-问答题
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适中
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【推荐2】如图,在
中,已知
,D是斜边
的中点,
交
于点E,连接
,已知
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,求
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