如图,由边长为1的正方形构成的9×5网格,小正方形的顶点叫做格点,
的顶点均在格点上
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/fa62c608-9a8e-49e1-84a9-eadddddb1e6b.png?resizew=185)
(1)
_______;
(2)仅用无刻度的直尺在
上找一点E,使
平分
;
(画图过程中起辅助作用的用虚线表示,画图结果用实线表示)
(3)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/fa62c608-9a8e-49e1-84a9-eadddddb1e6b.png?resizew=185)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
(2)仅用无刻度的直尺在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
(画图过程中起辅助作用的用虚线表示,画图结果用实线表示)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab974d5af3c6713d7150fca57d2b508c.png)
更新时间:2023-05-04 11:16:39
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相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,
与
的顶点均在边长为1的小正方形网格格点上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/4060cf9d-6737-43bf-878b-1601b9e91df0.png?resizew=171)
(1)判断
与
是否相似,并说明理由;
(2)求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/4060cf9d-6737-43bf-878b-1601b9e91df0.png?resizew=171)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb8eca20ce2c918ea4034ea15210c7f.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】如图,在长度为1个单位长度的小正方形组成的正方形网格中,点A、B、C在小正方形的顶点上.
(1)在图中画出与△ABC关于直线
成轴对称的△A′B′C′;
(2)在直线
上找一点P,使PB+PC的和最小,并算出这个最小值.
(1)在图中画出与△ABC关于直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/2021/1/4/2628839352606720/2630117014675456/STEM/95d8c70d4e6c44b482fa363b94c0d01b.png?resizew=233)
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适中
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【推荐1】已知:在△ABC中,AB=6,AC=BC=5,将△ABC绕点A按顺时针方向旋转(旋转角度小于180°),得到△ADE,点B的对应点为点D,点C的对应点为点E.
(1)如图1,连接BE,若∠DAB+∠ACB=180°,请判断四边形AEBC的形状,并说明理由;
(2)如图2,设BE的延长线与AD交于点F,若AF=FD,求∠BAD的度数;
(3)如图3,连接CD,若∠CAE=∠ACB,求CD的长.
(1)如图1,连接BE,若∠DAB+∠ACB=180°,请判断四边形AEBC的形状,并说明理由;
(2)如图2,设BE的延长线与AD交于点F,若AF=FD,求∠BAD的度数;
(3)如图3,连接CD,若∠CAE=∠ACB,求CD的长.
![](https://img.xkw.com/dksih/QBM/2019/4/19/2185675939168256/2187457698226176/STEM/e0394f9a146840e9873381613f744e85.png?resizew=399)
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解答题-问答题
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适中
(0.65)
【推荐2】如图,菱形
的周长
,它的一条对角线
长
.
![](https://img.xkw.com/dksih/QBM/2018/9/9/2028487336534016/2037371532804096/STEM/006a6797fd12473ea6d3198b78de6a6b.png?resizew=117)
求
的度数;
求菱形另一条对角线
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21fd00a06a7a35993d063aad8017ebe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3aefd0f8655534c2cbf3f8e2b3b90a4.png)
![](https://img.xkw.com/dksih/QBM/2018/9/9/2028487336534016/2037371532804096/STEM/006a6797fd12473ea6d3198b78de6a6b.png?resizew=117)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab1b173dbc2cf639f0bb023c9718b06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
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解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,
是正方形
的对角线,
平分
交
于
,点
在
上,且
,连接
并延长,分别交
,
于点G,F.
(1)求证:
;
(2)求
的值;
(3)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157b42da58d55daad27d98b2fec15ff.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c780c8f43ce63266571994c756e6b0bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/d9ff7bb8-3ee7-4e13-9e9d-402ca41b40e3.png?resizew=144)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/569b3d6a23459e586ead541d8c63d636.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/688b744817d7b549fcd3c84cfe06b16f.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beffcba06042208e8f5bdd0b611313f2.png)
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解答题-问答题
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适中
(0.65)
【推荐2】如图,在一张长方形纸片
中,
,
,点
,
分别是
和
的中点.现将这张纸片按图示方式折叠,求
的大小及
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/743e78238b6e16b5574b46ebff840430.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9040c9795e7132ebf65ede1f98c4d72b.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/130a5779fb467b31ef7d405553b586d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://img.xkw.com/dksih/QBM/2021/5/12/2719418944765952/2719493705924608/STEM/a4c646bb57f9448a91bd6dbe24dcd4ad.png?resizew=124)
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解答题-作图题
|
适中
(0.65)
【推荐1】如图,在
的正方形网格中,每个小正方形的边长为
,
、
、
均为小正方形的顶点,请仅用无刻度的直尺画图,按要求保留作图痕迹.
中作出
边上的高
;
(2)在图
中作出
边上的点
,使得
;
(3)在图
中作出
边上的点
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd4be97adde17423d59d86d18318c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](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/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)在图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84ab28afdca1e817ce408b3f87e9bef2.png)
(3)在图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c43508a729e76fa56997323ebb0326.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】如图,在由边长都为1个单位长度的小正方形组成的
正方形网格中,点A,B,P 都在格点上.请画出以AB为边的格点四边形(四个顶点都在格点的四边形),要求同时满足以下条件:
条件1:点P到四边形的两个顶点的距离相等;
条件2:点P在四边形的内部或其边上;
条件3:四边形至少一组对边平行.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/1/54e88a79-fa64-473b-904f-45c45c037c83.png?resizew=572)
(1)在图①中画出符合条件的一个
ABCD, 使点P在所画四边形的内部;
(2)在图②中画出符合条件的一个四边形ABCD,使点P在所画四边形的边上;
(3)在图③中画出符合条件的一个四边形ABCD,使∠D=90°,且∠A≠90°.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd4be97adde17423d59d86d18318c2c.png)
条件1:点P到四边形的两个顶点的距离相等;
条件2:点P在四边形的内部或其边上;
条件3:四边形至少一组对边平行.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/1/54e88a79-fa64-473b-904f-45c45c037c83.png?resizew=572)
(1)在图①中画出符合条件的一个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a5328919a7cec382c2e91c9c528fc1.png)
(2)在图②中画出符合条件的一个四边形ABCD,使点P在所画四边形的边上;
(3)在图③中画出符合条件的一个四边形ABCD,使∠D=90°,且∠A≠90°.
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