两个含30°角的直角三角形ABC和直角三角形BED如图那样拼接,C、B、D在同一直线上,AC=BD,∠ABC=∠E=30°,∠ACB=∠BDE=90°,M为线段CB上一个动点(不与C、B重合).过M作MN⊥AM,交直线BE于N,过N作NH⊥BD于H.
(1)当M在什么位置时,△AMC∽△NBH?
(2)设AC=
.
①若CM=2,求BH的长;
②当M沿线段CB运动时,连接AN(图中未连),求△AMN面积的取值范围.
(1)当M在什么位置时,△AMC∽△NBH?
(2)设AC=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
①若CM=2,求BH的长;
②当M沿线段CB运动时,连接AN(图中未连),求△AMN面积的取值范围.
![](https://img.xkw.com/dksih/QBM/2019/4/7/2177432351965184/2179545619529728/STEM/9184a584f91246bdb0f9a20d534ffd6c.png?resizew=176)
更新时间:2019-04-10 18:39:49
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相似题推荐
解答题-问答题
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【推荐1】如图,点A,C是
上的点,且
,过点A作
,连接BC交
于点D,点D是BC的中点.
![](https://img.xkw.com/dksih/QBM/2022/3/30/2947580378284032/2949020022161408/STEM/f435c300-ddde-41e8-a36c-9356ae7d917e.png?resizew=416)
(1)求
的度数;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a1355d96e31c41efe988488c0a461d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3574de9c45d8e27a95a79000f5650204.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/2022/3/30/2947580378284032/2949020022161408/STEM/f435c300-ddde-41e8-a36c-9356ae7d917e.png?resizew=416)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451745d95850ed4b2228c9cc5e7d7759.png)
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【推荐2】如图,
为等边
的高,
,点
为射线
上的动点(不与点
、
重合),连接
,将线段
绕点
逆时针旋转
,得到线段
,连接
,
.
在线段
上时,且
在射线
上时,求证:
.
(2)如图②,当点
在线段
的延长线上时,求证:
.
(3)若点
在线段
的延长线上,且
时,请直接写出线段
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a5e0a51c9e14fb246b0ba0b231c1e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cefaa03a2be71c9fc509b5b309d1c6ad.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/785be2e1b38ecea16cd26a93121feccd.png)
(2)如图②,当点
![](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/f07df526cd0c86f69c3e4016e75c4596.png)
(3)若点
![](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/b8115a3c118a219bf18ef3805638bb4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
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名校
【推荐1】如图1,抛物线
与x轴交于A、B两点(A在B的左侧),与y轴交于点C,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/e1206d77-2f1f-4579-b360-9f440c5f0e66.png?resizew=440)
(1)求
的面积;
(2)如图2,点P为直线上方抛物线上的动点,过点P作
交直线
于点D,过点P作直线
轴交直线
于点E,求
的最大值及此时P的坐标;
(3)在(2)的条件下,将原抛物线
沿射线
方向平移
个单位,点M是新抛物线与原抛物线的交点,N是平面内任意一点,若以P、B、M、N为顶点的四边形是平行四边形,请直接写出点N的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8cce0038e85b37ac01672aa2ccc042.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e675a92cad72c65aa4071b9d9e226090.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/e1206d77-2f1f-4579-b360-9f440c5f0e66.png?resizew=440)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)如图2,点P为直线上方抛物线上的动点,过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347f730ec6563a05b6de6f0800cb2241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf0215fcd72572bb524eca8a7fdc3f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f3a30d63fde5623d018b4a77231967.png)
(3)在(2)的条件下,将原抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8cce0038e85b37ac01672aa2ccc042.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ac4a1ec023ef41014cb7730cf8ffb.png)
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【推荐2】如图1,一张矩形纸
,
,点
分别在边
上,且
,把
沿
翻折得到
.
![](https://img.xkw.com/dksih/QBM/2020/3/12/2417861579661312/2417885806002176/STEM/4aabcc3c658741da8774630c451957b2.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/2020/3/12/2417861579661312/2417885806002176/STEM/bd7e067d3bf94555be6435d42cfb53bb.png?resizew=189)
(1)如图1,若
.
(Ⅰ)当
时,
_____度;
(Ⅱ)当
时,求
的长度.
(2)若直线
与边
交于点
,当
时,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38c5e0f341259ff7cd68f27a4a449bfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70daa268c7a0b17f39c1e6eba043a3b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3767efa8adfb71001ad39df9560cbf6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddbf5459b20ca890a47ebf8d51d90cc2.png)
![](https://img.xkw.com/dksih/QBM/2020/3/12/2417861579661312/2417885806002176/STEM/1d676aaf49a54d4c90ff3050c0819e0f.png?resizew=213)
![](https://img.xkw.com/dksih/QBM/2020/3/12/2417861579661312/2417885806002176/STEM/4aabcc3c658741da8774630c451957b2.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/2020/3/12/2417861579661312/2417885806002176/STEM/bd7e067d3bf94555be6435d42cfb53bb.png?resizew=189)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b34233772c4c26d6669499d9b1f15a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e80371754b2bb6259920dd580ba24f37.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e744a2d5ee025ce599d7241dcbba89fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e9ecd5b1a81ab87a9108123b31dd31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐1】已知:在平面直角坐标系中,点O为坐标原点,直线y=﹣x+3交x轴于点B,交y轴于点A,过点A作AC⊥AB交x轴于点C.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/33bb9d9f-2905-494c-931c-1e7fe4e2f9f4.png?resizew=550)
(1)如图1,求直线AC的解析式;
(2)如图2,点P在AO的延长线上,点Q在AC上,连接PB,PQ,且PQ=PB,设点P的纵坐标为t,AQ的长为d,求d与t之间的函数关系式(不要求写出自变量t的取值范围);
(3)如图3,在(2)的条件下,PQ交x轴于点D,延长PQ交BA的延长线于点E,过点E作EF⊥PE交y轴于点F,若DE=
EF,求点Q的坐标.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/33bb9d9f-2905-494c-931c-1e7fe4e2f9f4.png?resizew=550)
(1)如图1,求直线AC的解析式;
(2)如图2,点P在AO的延长线上,点Q在AC上,连接PB,PQ,且PQ=PB,设点P的纵坐标为t,AQ的长为d,求d与t之间的函数关系式(不要求写出自变量t的取值范围);
(3)如图3,在(2)的条件下,PQ交x轴于点D,延长PQ交BA的延长线于点E,过点E作EF⊥PE交y轴于点F,若DE=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
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【推荐2】已知:在平面直角坐标系中,O为坐标原点,直线
与
轴相交于点
,与
轴相交于点
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/d51f75e6-ab97-429c-8abb-bdfb40695c2b.png?resizew=821)
(1)如图1.求直线
的解析式.
(2)如图2.点
在点
左侧的
轴上,点
在线段
上(不与点
和点O重合),
交
于点
,且
,设点
的横坐标为
,
的面积为
,求
与
之间的函数关系式.(不要求写出自变量
的取值范围)
(3)如图3,当
时,过点
作
交
轴于点
,过点
作
交
于点
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95f70e1f599642d4cb2b0334ab4db128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa6d65a514fe4eef4fc84059b27a2cb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/d51f75e6-ab97-429c-8abb-bdfb40695c2b.png?resizew=821)
(1)如图1.求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)如图2.点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/526f4193d84dc016d6657fe4553a3dfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)如图3,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8494614bf2afd710a5d8f3e491f8bbc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b00a5239269d72d6f9632e7d77347106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e642dfd54ba57ea8e35d8a40cd9a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
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