问题情境】已知等腰三角形
中,点D在底边
上.将线段
绕点D顺时针旋转得到线段
(旋转角小于180°),连接
,
,以
为底边在其上方作等腰三角形
,使
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/17/6dbbf0b9-ffa4-4369-9c2c-d91f9a5bb1f5.png?resizew=707)
【尝试探究】
(1)如图1,当
时,易知
;
如图2,当
时,则
与
的数量关系为______.
(2)如图3,探究
与
的数量关系(用含
的三角函数表示),并说明理由.
【拓展应用】
(3)如图4,当
,且B,E,F三点共线时,若
,
,则
的长为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93c3f982d999937891eec4cb22d62e5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8540871b584dcd428765174e9f8b7c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50b34849fd8bb3d2bb8739e1c59de53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/17/6dbbf0b9-ffa4-4369-9c2c-d91f9a5bb1f5.png?resizew=707)
【尝试探究】
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97cf714ffb3fd5917a76b191640b55fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e444739e269a94733b2b0598b559313.png)
如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c69a23d106fd34aa17b22e9c9a8de36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
(2)如图3,探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
【拓展应用】
(3)如图4,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c96cb3ac8290e09c55d4eb336a8608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391daa6ffb8d8f0c69b0680d1130920e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e319ce030f7fe57a9777c7b8f583cc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
更新时间:2024-04-22 14:41:55
|
相似题推荐
解答题-证明题
|
较难
(0.4)
【推荐1】已知平行四边形
,E为
边上的中点,F为
边上的一点,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/23/427e9ab8-0a7d-4fd0-9a78-677974cb1623.png?resizew=497)
(1)如图1,连接
并延长交
的延长线于点G,求证:
;
(2)如图2,若
,
,求
;
(3)如图3,若
,P为
的中点,Q为
的中点,
,
,
①判断
与
的位置关系,并说明理由;
②求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/23/427e9ab8-0a7d-4fd0-9a78-677974cb1623.png?resizew=497)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4763d25d89038fd620543cebeb9b630b.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e195e21a4520c4ce130785171af56d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048982728a2204a2f78c3f186af4c07e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90026b96116424a245b335b1adb886b.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75cad196e55dbd13c45e11a51d700383.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8adbc96bd4697ace4d9a318db350c6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f403d7982e80e4b0a306e64e7e72fa0.png)
①判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图1,直线
与
轴负半轴、
轴正半轴分别交于
、
两点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/2a679305-9054-405a-9042-79328fb2b12c.png?resizew=344)
(1)当
时,设
为
延长线上一点,作直线
,过
、
两点分别作
于点
,
于点
,若
,求
的长.
(2)当点
在
轴正半轴上运动时,分别以
,
为边,点
为直角顶点在第一、二象限内作等腰
和等腰
,连结
交
轴于点
,如图2.试猜想:
的长是否为定值?若是,请求出其值;若不是,不必说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0f39113755621ca2fbc1a2f1b14bec.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/2a679305-9054-405a-9042-79328fb2b12c.png?resizew=344)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fca3734de79f7f50b552ef62b29dc7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c21ada1be6bb7f4ffd9dde9fc81aa7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b8fc6401fa904347af60bfdeec37f8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cbe7b4080e95b08e59edaaa5b9e6358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d33fb0ee0857654dad65e294ab41f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1a3b94566843e92ce775ff6bdf386fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐3】如图,在Rt△ABC中,∠ABC=90°,∠BAC=30°,点D在直线BC上运动,连接AD,以AD为斜边在直线AD的右侧作Rt△ADE,其中∠AED=90°,∠DAE=30°.
(1)如图1,点D运动到点B的左侧时,DE与AB相交于点O,当AO平分∠DAE时,若DC=6,求AD的长;
(2)如图2,点D沿射线BC方向运动过程中,当BD=AB时,连接BE,过点B作BF⊥BE交EA的延长线于点F,取CD的中点G,连接EG.求证:DE+AE=
EG;
(3)如图3,点D沿射线CB方向运动过程中,连接BE,将线段BE绕点E顺时针方向旋转60°,得到线段EH,连接AH、CH.若AB=6,当CH+
AH取得最小值时,请直接写出△ABE的面积.
(1)如图1,点D运动到点B的左侧时,DE与AB相交于点O,当AO平分∠DAE时,若DC=6,求AD的长;
(2)如图2,点D沿射线BC方向运动过程中,当BD=AB时,连接BE,过点B作BF⊥BE交EA的延长线于点F,取CD的中点G,连接EG.求证:DE+AE=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
(3)如图3,点D沿射线CB方向运动过程中,连接BE,将线段BE绕点E顺时针方向旋转60°,得到线段EH,连接AH、CH.若AB=6,当CH+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/12cdfa43-9bc7-4c7a-90a3-ff92ebfea0d4.png?resizew=476)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】如图,已知
是等边三角形,
,点
在
上,
,
是
的外角平分线,连接
并延长与
交于点
.
(1)求
的长;
(2)求
的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42b730d87bb95763a48c69f1b0329ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/7/378bc0ef-a6f3-4d22-9974-023e18bd9e03.png?resizew=178)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79cd9d0d73549e2944578f3513631ce5.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】【感知】
如图1,已知反比例函数
上有两点
,
,
轴交x轴于点E,
轴交y轴于点F,则
______;
_______;
与
的位置关系:_______.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/9/5ede167f-5ea0-42af-8142-970eae84c415.png?resizew=249)
【探究】
数学社团的同学们对上述问题又时行了思考,如图2,当A,B是双曲线
同一支上任意两点,过A,B分别向y轴,x轴作垂线,交y轴于点E,交x轴于点F,连接
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/9/772e086a-a6d4-44d8-855c-63af1cc6038e.png?resizew=249)
①试探究
与
面积的关系并说明理由.
②试探究
与
之间的位置关系并说明理由.
【运用】
如图3,已知点A、B在反比例函数
的图像上,且
,B是反比例函数
第三象限内图像上的一动点,过点A作
轴,过点B作
轴,垂足分别分为E,F,若四边形
的面积为20,求点B的坐标.(提示,可直接运用上述所发现的结论,答案见公众号:绿爱生活)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/9/d2586124-40f7-4237-a101-7793257d57e3.png?resizew=210)
【拓展】
如图4,函数
的图像与过原点O的直线相交于B、D两点,点A是第一象限内图像上的动点(点A在点B的左侧),直线
分别交于y轴、x轴于点C、E,连接
分别交y轴、x轴于点M、N.若
,则
______.
如图1,已知反比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4212e0f2da912518e8b02a741cc91ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b96726374e05330dd8e2abd924b4058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8178c63d125ee6235feeb2fc70d02745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89d7feb7cd0d8c8a1e4c8fb10ac9f919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a635c456b235b771dcec05665a49994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50b8b8bcbb4eee157a421612ef4947f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/9/5ede167f-5ea0-42af-8142-970eae84c415.png?resizew=249)
【探究】
数学社团的同学们对上述问题又时行了思考,如图2,当A,B是双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03517310ea1e913f709753592ac65ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/9/772e086a-a6d4-44d8-855c-63af1cc6038e.png?resizew=249)
①试探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
②试探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
【运用】
如图3,已知点A、B在反比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3080b9d9aaace24823a0fd8eb469e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b431187c37d6d5edfbdb458668fb9d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3080b9d9aaace24823a0fd8eb469e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8178c63d125ee6235feeb2fc70d02745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89d7feb7cd0d8c8a1e4c8fb10ac9f919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bedde879f99aed69d745d5ec8fe62084.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/9/d2586124-40f7-4237-a101-7793257d57e3.png?resizew=210)
【拓展】
如图4,函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03517310ea1e913f709753592ac65ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b6c335ce6d93ec0eba323f43412b5c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c446968bfc177f1c9ff7660ac0b746.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/9/d62f114b-be2c-4efe-9916-dd0ae78edad9.png?resizew=249)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】如图,已知抛物线
交x轴于
,
两点,交y轴于点C,P是抛物线上一点,连接
、
.
(2)连接
,
,若
,求点P的坐标;
(3)若
,直接写出点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90731f6d4190300b33385ce70eb2783a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c33700c3358cbbd8db376f9f0613b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69fff64ee6ea236550185efc7ed1b598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8341aac97aa7820d30ee61960cf9dd9.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a5cfe79194d7aa23017a4ad4473e8b5.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】在等边
中,
,点
是
的中点,点
分别是
边上一点(不与点
重合).
(1)如图1,当点
为
中点,点
为
中点时,求
的长度;
(2)如图2,将线段
绕着点
顺时针旋转
得到线段
,连接
,当
三点在同一条直线上时,求
的长度;
(3)如图3,将线段
绕着点
顺时针旋转
得到线段
,延长
交线段
于点
,探索
三条线段之间的关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70a90be2d6a807ff7d00ce353164448b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e478787ebfeb68a5a7594dbd9eecd4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/9/1568923d-4382-43b1-839a-d7c668b0aea9.png?resizew=472)
(1)如图1,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)如图2,将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8116301fbb172f9134a8ad4257a910c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(3)如图3,将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632917e61f4208959686d118c7f19231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3d566704b44ea4ef1f99c37bd46902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d470b145084aa24c7842c6f01a4a937.png)
您最近一年使用:0次