1 . 如图所示,
与
相交于点
,
,
,不添加辅助线,就可以判定
,判定全等的依据是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a23f35ebcd9799d82c1e41c09781a4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0866e1551b61074ca8e61261ecd1f9dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d336d2f0e4e296f0191727ac2991f232.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/2ce5fd52-3be5-4393-acb0-4f0346ca6388.png?resizew=156)
A.![]() | B.![]() | C.![]() | D.以上均可以 |
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2 . 如图,
,可得
的依据是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3c610c66e935412a4f3c1fb86cdd4a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d5f49c0d6162ea6264c23fdff924cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/24/85c00084-617f-495a-80ba-baa3b37825d0.png?resizew=140)
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3 . 下列命题中,是真命题的是( )
A.有两条边和一个角对应相等的两个三角形全等 |
B.等腰三角形的对称轴是底边上的高线 |
C.在同一平面内,过一点有且只有一条直线垂直于已知直线 |
D.同位角相等 |
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4 . 如图,已知
,
,E、F是
上两点,且
.求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26dba530ba1c15d3d3d5f90e0bf2810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb27272b4eb9ed057dd3b4d40697e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f85607df986eec20975c376b75e3679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26dba530ba1c15d3d3d5f90e0bf2810.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/31/8fe3b93b-e561-4047-9763-1f4805700ec1.png?resizew=186)
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5 . 如图,在
中,
,
、
是中线,则由______ 可得
.(填“
”“
”“
”或“
”)
![](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/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e67a404f275dc210fe0d39862dcdfc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6720e36b02193db161c61d4017673760.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5a290f047f50481318d040c604d72f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9beb8b968744573e593ac28451c69729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4351a730f61bb998bab8f0b7848912d7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/21/56d3d844-6fc5-41d6-84d5-9d8c62c94283.jpg?resizew=120)
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6 . 如图,点
在
上,
,要使
,可补充的一个条件是:___________ .(答案不唯一,写一个即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369c72048f75562d93c7436cd8001fa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dcb2a7526c13511d1a8247cf6f16e27.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/21/9442aa6b-6687-4a32-ac5d-4a597d8fd945.jpg?resizew=130)
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名校
7 . 如图,点
,
,
,
在同一条直线上,点
,
分别在直线
的两侧,且
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/25/3255f30c-b4f2-4075-a9af-d91b8224d450.png?resizew=140)
(1)求证:
;
(2)若
,
,求
的长.
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f8eebda19eded2b059774a8c2666c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf7dc43a39738e3e2a0b819be505c6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/25/3255f30c-b4f2-4075-a9af-d91b8224d450.png?resizew=140)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee86f1d1de9266c346c4f2771ec4e76e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
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2023-11-20更新
|
268次组卷
|
5卷引用:湖南省娄底市2023-2024学年八年级上学期期中数学试题
8 . 如图,工人师傅设计了一种测量零件内径
的卡钳,卡钳交叉点O为
、
的中点,只要量出
的长度,就可以知道该零件内径
的长度.其依据的数学基本据实是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6024fd4532f5f981deac4582c799a6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb0628cecbfc98d390e5447d52414e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/21/dafbf562-b1c0-4ffc-9c1e-aea334240a0d.png?resizew=160)
A.两边及其夹角分别相等的两个三角形全等 |
B.两角及其夹边分别相等的两个三角形全等 |
C.等角对等边 |
D.两点之间线段最短 |
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9 . 如图,
,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfdadd6f7bf825732dd8833d5d194d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c244edbf77fbb8e9c017515e370c5c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439fbb8974a5f907205d26b47b420bf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac61f3477e623aa4f924a82bd7a06ce4.png)
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名校
10 . 如图,
,点
、
分别在线段
、
的延长线上,且
,
,
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fca3734de79f7f50b552ef62b29dc7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33cbad6599796efc1c177ae9349feda9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbb0762ea78d24c573e55488646c0641.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e19a24762d0c926dec6f464a31df6648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3de20ba8bda63c650ef571be155702.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/15/f1a882e7-f6c1-4b48-821d-cf3ac28a68b7.png?resizew=136)
A.![]() | B.![]() | C.![]() | D.![]() |
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