![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76ffd241623ec4ee9fd08876464def3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ed1fce01430ae31294c29d626626f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307773456102f4d7ea664385029acdc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf8d2fce11c2975e84140bcef1bbda29.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/6bebd369-a659-4455-b2d2-78fbaae6acb5.png?resizew=520)
初探:
(1)如图1,若点P在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c109cf538970b0f313a06feb5154494f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa61f1be96d581867ea9f074420a2252.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a78f0970c27d19720c1fd0d44158d889.png)
再探:
(2)若点Р运动到边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a78f0970c27d19720c1fd0d44158d889.png)
拓展:
(3)如图3,写出此时
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a78f0970c27d19720c1fd0d44158d889.png)
更新时间:2021-08-08 08:18:08
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,
中,
,在BC的延长线上取一点D,使得
,点E是
的中点,连接
,M为
的中点,连接
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/6d2fa097-5664-42e3-abd1-1704c1ffa4f3.png?resizew=120)
(1)试判断
与
的位置关系,并说明理由;
(2)若
,请求出
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f77256d3db06fe922ef699df09a3b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c71622531dfa894f21b2da123d020d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/6d2fa097-5664-42e3-abd1-1704c1ffa4f3.png?resizew=120)
(1)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca4b6a112fcf24ff63571aba262191e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】
中,
,点
分别是边
的点,点
是直线
上一动点,连接
,设
.
![](https://img.xkw.com/dksih/QBM/2022/11/17/3111684164034560/3114580834934784/STEM/71198e2275bb4249971e5238bfdcf1e2.png?resizew=435)
(1)如图1,若点
在线段
上,且
,则
___________
;
(2)当点
在线段
上运动时,依题意补全图2,用等式表示
与
的数量关系(用含
的式子表示),并证明;
(3)当点
在线段
的延长线上运动时,请直接用等式表示
与
的数量关系(用含α的式子表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b173ac8cc4ac4f1c9e1daaa605fbb27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e261a942097fc850672dc68fab43229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eb5c3d1ac9cd5bf6831c21ab9a365b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e7c9d98db358c74deb5b8cd9e8aa9ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6fd4c7c77c96d058a2598ca591a856.png)
![](https://img.xkw.com/dksih/QBM/2022/11/17/3111684164034560/3114580834934784/STEM/71198e2275bb4249971e5238bfdcf1e2.png?resizew=435)
(1)如图1,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c96cb3ac8290e09c55d4eb336a8608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f674fb200773a325fb7b34bae82800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd82c51c8a9c1dd494cbb1d9c5411719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed8c43341c982e729dcd6c3b178865f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(3)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd82c51c8a9c1dd494cbb1d9c5411719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed8c43341c982e729dcd6c3b178865f8.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在四边形
中,
,
平分
交
于点
,连接
.
![](https://img.xkw.com/dksih/QBM/2022/9/28/3076163256549376/3077661133291520/STEM/7d10d30d410941d0a6beee2ee2ba76f7.png?resizew=165)
(1)若
,求证:
.
(2)若
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/387a4b5077b3e2b86449fc3d9d77b335.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://img.xkw.com/dksih/QBM/2022/9/28/3076163256549376/3077661133291520/STEM/7d10d30d410941d0a6beee2ee2ba76f7.png?resizew=165)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13d56d020ccb6a598187f81e987ab6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07b8f53d5fb93efe2609e0936dd38bd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deece9a4d9301fb6028aa1f81a11c23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e418c4354d6c8e172685b9829141e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/936f5f26aac7197d42a41081fb1fda0e.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】已知:如图,在四边形
中,
,点E在边
上,
.
![](https://img.xkw.com/dksih/QBM/2022/11/3/3101888288145408/3115329760092160/STEM/cbca6a61b8e04b31a7d0dc41c635d192.png?resizew=165)
(1)求证:
.
(2)当
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4009aa13093cc3865dcd51b371892160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f521f5567f9ae64ad1c5876eb69b92e.png)
![](https://img.xkw.com/dksih/QBM/2022/11/3/3101888288145408/3115329760092160/STEM/cbca6a61b8e04b31a7d0dc41c635d192.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ef9500289a895ad4d69f113a11e7525.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d1c4681c861ab1b0ef3a9406737d4cd.png)
您最近一年使用:0次