1 . 如图是小明制作的风筝骨架示意图,他先量得
,然后确定木棒
的中点,再将木棒
固定在点A和中点处,就可确保木棒
和
垂直,小明运用的数学知识不可能是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/a038159d-6b1c-4dca-94e0-5503f16c3551.png?resizew=149)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/a038159d-6b1c-4dca-94e0-5503f16c3551.png?resizew=149)
A.等腰三角形三线合一 | B.![]() | C.![]() | D.![]() |
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2 . 如图,
,若不添加辅助线并利用“
”判定
,则可以添加的条件是_____ (填写一个条件即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/024dc2ccbbe321774df5d44e8785b203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5a290f047f50481318d040c604d72f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda2b7d37641a3f3365b33b380a40a96.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/2e821a5e-14b6-4f16-8b4d-c61ac64f3144.png?resizew=120)
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3 . 如图,
,
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ad1df79d93a5d9351c9723d687fd94d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0b8af8b70345d514893cad291b0da3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f0ea5666fbefe9adae7b76579134384.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26dba530ba1c15d3d3d5f90e0bf2810.png)
您最近一年使用:0次
4 . 已知点C在线段
上,且
和
都是等边三角形,连接
,分别交
于点M,N.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/23/5e8eb6f4-6ba0-4fbf-8522-f8747e0ca2f0.png?resizew=160)
(1)求证:
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e8d80f6159c7b21b9238a0696a0da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00e7df43b869a50bd1bc85063763e8a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/23/5e8eb6f4-6ba0-4fbf-8522-f8747e0ca2f0.png?resizew=160)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd952c6cc9d03dfe75a363a66e8f61d7.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73cbd27d06065f2ddd5cf5ccbe5bef48.png)
您最近一年使用:0次
2024-01-24更新
|
75次组卷
|
2卷引用:新疆维吾尔自治区省直辖县级行政单位2023-2024学年八年级上学期1月期末数学试题
5 . 如图,已知
平分
,添加一个条件后能够运用“
”的方法判定
,则这个条件是_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5a290f047f50481318d040c604d72f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b84c9371e4a03c80783e0ec52f60530.png)
您最近一年使用:0次
2024-01-24更新
|
93次组卷
|
3卷引用:重庆市万州区2023-2024学年八年级上学期期末数学试题
重庆市万州区2023-2024学年八年级上学期期末数学试题重庆市万州区部分学校2023-2024学年八年级上学期期末数学试题(已下线)专题05 全等三角形的判定与性质(含全等模型)(8大题型+优选提升题)-备战2023-2024学年七年级数学下学期期末真题分类汇编(北师大版)
解答题-证明题
|
较易(0.85)
|
6 . 如图,
,
.下列三个条件:
①
;
②
;
③
.
请你从①②③中选一个条件,使
.
(2)添加条件后,请证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adaae99b4ac308549134169e69247a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c244edbf77fbb8e9c017515e370c5c8.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfdadd6f7bf825732dd8833d5d194d68.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da8fe8f5f8a3f17561d70652ad1172a.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43c10ef52c84726a0a1e9a11c660f921.png)
请你从①②③中选一个条件,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac61f3477e623aa4f924a82bd7a06ce4.png)
(2)添加条件后,请证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac61f3477e623aa4f924a82bd7a06ce4.png)
您最近一年使用:0次
2024-01-23更新
|
169次组卷
|
2卷引用:福建省泉州市安溪县2023-2024学年八年级上学期期末数学试题
名校
7 . 已知:如图,在
中,
,垂足是D,E是线段
上的点,且
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff29971ccc633d89832ffa9bd54afa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3620030e8808da46df97330103827913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302a8692e9810a569e0ff38a140cead1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/f443fbc1-c278-48f4-91f3-4a539f89c4a7.jpg?resizew=133)
您最近一年使用:0次
8 . 已知
和
位置如图所示,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/20/c31c17df-3bd5-48af-821a-9131039cfcee.jpg?resizew=137)
(1)求证:
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7ad41b36674fd6e90176ee24cdefbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dddb32a7a5c157fdf8aa049b2d665b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e499d4d6dd40cc4bda56232628327d40.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/20/c31c17df-3bd5-48af-821a-9131039cfcee.jpg?resizew=137)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b83407b7a590f1529162e79b8073a62.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2765917637583d22a579ff075f9baa3.png)
您最近一年使用:0次
名校
9 . 如图,在四边形
中,
,
,点
是边
上一点,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/5203e1c7-b380-4214-9cbf-45d14e395271.png?resizew=180)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
;
(2)试利用这个图形证勾股定理.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3a079cfdcca9acdacecbf08f9f78cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8915e8e775538d41debf1933102c6b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4225465934b192802eb75bb50680724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709636ef573807faf903b99cc7a8bfc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f20eb8c8cc1c0be36c3fa28a4205f7ba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/5203e1c7-b380-4214-9cbf-45d14e395271.png?resizew=180)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df77247b16614ddcd3355a1c38aee97c.png)
(2)试利用这个图形证勾股定理.
您最近一年使用:0次
10 . 如图,已知
,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a2ab6940dca62be1f3b2b5f8531990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5cc2450dc300ce26b513c2abae28cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f03a43549ab71f0998fffbcb48397b00.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/93838392-7841-4fa8-bc09-50f5310a9806.png?resizew=202)
您最近一年使用:0次