如图,点E是正方形
的边
上一个动点,连接
.
上作一点G、使
(保留作图痕迹,不写作法);
(2)延长
交
于点
,求证:
;
(3)随着点E在边
上运动,当
时,直接写出线段
长的最小值.
![](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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a51ed1fa725fd483e7379e614a9bc85.png)
(2)延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.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/04f8eebda19eded2b059774a8c2666c3.png)
(3)随着点E在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
更新时间:2024-05-25 16:54:50
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】如图,在
中,点D为
的中点,连接
,过点A作
于点E.
上作点F,使得
(不写作法,只保留作图痕迹);
(2)在(1)的基础上,连接
求证:四边形
为平行四边形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c51c25b65a37b676ae3c3b71c29f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1089f40864a8ec79bf544ab7ff1cc43.png)
(2)在(1)的基础上,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf4dd8cf4a37aa46cb41919ba2642f0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,
是
的高,
是
的中线,
,
,
,直线
交
于点
,交
于点N.
(1)求证:四边形
是平行四边形;
(2)求
的度数;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59182f25fcf22afc79e28ded936de018.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41f2f95d643629321deb6e905c4f1ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/22/bd22a3b6-8673-4e9f-ad71-00e6cc402e42.png?resizew=120)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1683873d45d4bc8eadf70ba4ca6d8b.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】已知
,用无刻度的直尺和圆规按下列要求作图.(不写作法,保留作图痕迹)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/096debc0-abdc-4f98-9bbd-dead850a8869.png?resizew=245)
(1)在图1中的AB边上找一点D,连结CD,使
;
(2)在图2中的AC边上找一点E,连结BE,使
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/096debc0-abdc-4f98-9bbd-dead850a8869.png?resizew=245)
(1)在图1中的AB边上找一点D,连结CD,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5cdaeca61beaa223cbe5f754a02690.png)
(2)在图2中的AC边上找一点E,连结BE,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f57cb0d726cc25a350dc792b539ff2f2.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】小明在学习的过程中,遇到了一个问题:在四边形
中,
,点
是
上一点,且
平分
,
平分
.求证:
.
他的思路是:首先过点
作
的垂线,将其转化为证明三角形全等,然后根据全等三角形的对应边相等,使问题得到解决.请根据小明的思路完成下面的作图与填空:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/13/12bf1ff0-f3d4-4afd-bcb4-5104b906cf5f.png?resizew=137)
证明:用直尺和圆规,过点
作
的垂线
,垂足为点
(只保留作图痕迹).
,
.
又
,
_____①_____.
平分
,
_____②_____.
又
_____③_____.
_____④_____.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00789287044283e960c443cac80a56f7.png)
.
同理可得_____⑤_____.
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d8397018b0a01a1b4e9574604f9e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c562adb241caeba188b983f534a489.png)
他的思路是:首先过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/13/12bf1ff0-f3d4-4afd-bcb4-5104b906cf5f.png?resizew=137)
证明:用直尺和圆规,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39cc45c88b67f721cb7a09d889659992.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e664ab7b7b9c6c6a3078156eccf5f5.png)
又
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b883e9774dbe058b760adaea21f6e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1949518fc246fbd8426d08f701ade25d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
又
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/742973f07cf495cfea658c72b39ed23e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00789287044283e960c443cac80a56f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8d28351f29617ff040f707fed08bb7.png)
同理可得_____⑤_____.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae96cb5b56376afb9cae39fef71f2a59.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐1】正方形ABCD在平面直角坐标系中的位置如图所示,已知点A的坐标是(0,8),点B的坐标是(-6,0),求点D坐标.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/10/b5bae3b4-dbe1-4c9e-9b7a-258a511d026f.png?resizew=184)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,正方形ABCD内接于
,M为弧CD的中点,连接AM,BM.
(1)求证:弧AM=弧BM;
(2)求弧AM的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(1)求证:弧AM=弧BM;
(2)求弧AM的度数.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/3/32fe46a1-e925-4f44-8cb8-0fcd319e2382.png?resizew=143)
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解答题-作图题
|
适中
(0.65)
【推荐1】尺规作图:在下面两张图中分别用两种不同方法作出已知圆的一条直径.
(不要求写作法,保留作图痕迹,并在图中标注适当的字母.)
(不要求写作法,保留作图痕迹,并在图中标注适当的字母.)
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您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,E是△ABC的内心,AE的延长线交△ABC的外接圆于点D.
(1)BD与DE相等吗?为什么?
(2)若∠BAC=90°,DE=4,求△ABC外接圆的半径.
![](https://img.xkw.com/dksih/QBM/2018/11/16/2076734636990464/2083102678450176/STEM/12b0a5b6be874503b80d65aba547deb4.png?resizew=149)
您最近一年使用:0次