(1)如图(1)点
是正方形
的边
上一点(点
与点
不重合),点E在BC的延长线上,且CE=CP,连接BP,DE.求证:
且
;
(2)直线EP交AD于F,连接BF,FC.点G是FC与BP的交点.
①若
时,求证:
;
②若
(
是大于1的实数)时,记
的面积为
,
的面积为
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ef0acf1fcd0418be3f92c4e00f776c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c54c14b0de9d282d0f160c59426d14b.png)
(2)直线EP交AD于F,连接BF,FC.点G是FC与BP的交点.
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489527b3e4e6a6499b5006eb6c1ff37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a36e2aff505f3b61cb60f9fbd795ec9.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99dfff38d7582aea657742511eb3a78b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c3a4638e2eb4e684b73416fb6a0f344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d06fad1ed5a452a835e9a02cb011ed2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cb6ce2c6c78075615ef63ad9715a2e4.png)
![](https://img.xkw.com/dksih/QBM/2017/7/2/1721586730221568/1722321132576768/STEM/27662f5c32c247688bbe48d70b512576.png?resizew=349)
更新时间:2017-07-03 18:54:13
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在
中,
,D为BC的中点,连结AD,以AB为腰向外作等腰直角
.使
,
,连结CE,交AD于点F,交AB于点G,连结BF,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/7/13ff72a6-9d5c-4e9b-a6e6-e73358e081cb.png?resizew=158)
(1)若
,则
°;
(2)求证:
;
(3)若
,则
(用含a的式子表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5fc6ead6416492c231c320a5486f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e94dacf9ef98c98de9344a77079cf5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/7/13ff72a6-9d5c-4e9b-a6e6-e73358e081cb.png?resizew=158)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/456e0f77d83975fdbdb60b499cb5b521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c44345de7d1f37b48def25db8c5e2b.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1852d1e5dd9e31182c4ce06ae447a98.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681decfa8eb40a92d57f96ed4a8df069.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】(1)问题:课外兴趣小组活动时,老师提出了如下问题:如图1,在
中,若
,求
边上的中线
的取值范围.小华在组内经过合作交流,得到了如下解决方法:延长
到点E,使
,得到
,他用到的判定定理是______(用字母表示).
(2)问题解决:小明发现,解题时条件中若出现“中点”,“中线”字样,可以考虑构造全等三角形,请写出小明解决问题的完整过程;
(3)应用:如图2,以
的边
,
为边向外分别作等腰直角
和
,M是
的中点,连接
.当
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09c6e2075d7f39cf14a430665a99db6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ad98ad714864041a632ca949308e417.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01ccfa50b9cfcffc453c323d028571e.png)
(2)问题解决:小明发现,解题时条件中若出现“中点”,“中线”字样,可以考虑构造全等三角形,请写出小明解决问题的完整过程;
(3)应用:如图2,以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dba5a49bbbfab0fc4e0fa4b966d659dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a973f7b8e6acbd272a931d750d48b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/23/e89ac786-15d5-4515-96bf-83a4bcf869f4.png?resizew=273)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】已知
中,
,点E为BC的中点,以BC为底边的等腰
按如图所示的位置摆放,且
.请仅用无刻度的直尺分别按下列要求作图(保留作图痕迹).
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982615734788096/2989041954938880/STEM/4e74c268-91ec-4100-a05e-c65788b398f6.png?resizew=206)
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982615734788096/2989041954938880/STEM/d62bc8b6-a3f8-445b-901d-6090399f5ff8.png?resizew=204)
(1)在图1中作出
的中线CM;
(2)在图2中作出
的中线BN.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b382a28eab6e8474026353ba8664fc4c.png)
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982615734788096/2989041954938880/STEM/4e74c268-91ec-4100-a05e-c65788b398f6.png?resizew=206)
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982615734788096/2989041954938880/STEM/d62bc8b6-a3f8-445b-901d-6090399f5ff8.png?resizew=204)
(1)在图1中作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)在图2中作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐2】如图,在
中,
,点
分别在边
、
上,
,连结
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/11/ec82662e-bfbd-46ad-89b3-49c40b8e0298.png?resizew=144)
(1)若
,求证:
.
(2)若
,求
、
的大小.
(3)若
,则
的大小为__________度(用含
的代数式表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c5840e0454fdec7d2158072c43b8db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/242b88a92c3f78aab24d2cc6944c53ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32d5326fd9526c78cfb3b46d3f0b8c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/11/ec82662e-bfbd-46ad-89b3-49c40b8e0298.png?resizew=144)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1295be8e311b0f064b9a4c3f0c4570d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1a14c9489a8475cfcaf629fc7e6f59e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d67caa956042197d36d651c4ec1a75b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/936f5f26aac7197d42a41081fb1fda0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752fa646a2d9cfca34001748445301c9.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d8de8f5ad7a1ac612124dc046f25d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc7d1a478f313c3280060ab38cc8b9e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
真题
【推荐3】小东在做九上课本123页习题:“1:
也是一个很有趣的比.已知线段AB(如图1),用直尺和圆规作AB上的一点P,使AP:AB=1:
.”小东的作法是:如图2,以AB为斜边作等腰直角三角形ABC,再以点A为圆心,AC长为半径作弧,交线段AB于点P,点P即为所求作的点.小东称点P为线段AB的“趣点”.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/21/9a5a3231-87ed-4287-ba89-9862ceb8ac05.png?resizew=191)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/21/6336473f-4d1d-40f0-88df-ed7d73d5eefb.png?resizew=701)
(1)你赞同他的作法吗?请说明理由.
(2)小东在此基础上进行了如下操作和探究:连结CP,点D为线段AC上的动点,点E在AB的上方,构造
DPE,使得
DPE∽
CPB.
①如图3,当点D运动到点A时,求∠CPE的度数.
②如图4,DE分别交CP,CB于点M,N,当点D为线段AC的“趣点”时(CD<AD),猜想:点N是否为线段ME的“趣点”?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/21/9a5a3231-87ed-4287-ba89-9862ceb8ac05.png?resizew=191)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/21/6336473f-4d1d-40f0-88df-ed7d73d5eefb.png?resizew=701)
(1)你赞同他的作法吗?请说明理由.
(2)小东在此基础上进行了如下操作和探究:连结CP,点D为线段AC上的动点,点E在AB的上方,构造
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
①如图3,当点D运动到点A时,求∠CPE的度数.
②如图4,DE分别交CP,CB于点M,N,当点D为线段AC的“趣点”时(CD<AD),猜想:点N是否为线段ME的“趣点”?并说明理由.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在正方形ABCD中,点E为AB边上一动点(与点A,B不重合),连接CE,将
的两边所在射线CE,CA以点C为中心,顺时针旋转90°,分别交AD的延长线于点F,G.
(1)求证:
;
(2)用等式表示线段AE、AF与CG之间的数量关系,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a2db6311e228ed33b6c71d0a5918cf.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
(2)用等式表示线段AE、AF与CG之间的数量关系,并证明.
![](https://img.xkw.com/dksih/QBM/2020/2/10/2396214006931456/2396272985022464/STEM/a547520fe7ae4be9894b0b82303303e7.png?resizew=97)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,点E是正方形
边
上一点,过E作
的垂线,交
于点F,交
的延长线于点G.
(1)求证:
;
(2)若正方形的边长为4.
①当点E是
的中点,求
的长;
②当
取最大值时,
的长为多少?
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/91cccec3-3c08-4f02-8cd5-bc7a765c1484.png?resizew=102)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c3316975ecd3a43058c29ed0a8e0fb.png)
(2)若正方形的边长为4.
①当点E是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次