如图是一个
的网格图,图中已经画出线段
和
,其端点均在小正方形的顶点上,请你按要求画出图形并计算.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/30/b5d8a104-58a9-478a-80c9-79d45f7d77a0.png?resizew=328)
(1)画出以
为边的正方形
;
(2)画出一个以
为一条对角线的菱形
(点F在
的左侧),且其面积与(1)中正方形的面积相等;
(3)描述一下你画出菱形
的思路和依据.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66bf9a86e413569ecaa2a418dcb5a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/30/b5d8a104-58a9-478a-80c9-79d45f7d77a0.png?resizew=328)
(1)画出以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)画出一个以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
(3)描述一下你画出菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
更新时间:2023-06-22 16:03:37
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解答题-问答题
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【推荐1】如图,在正方形网格图中建立平面直角坐标系,一条圆弧经过网格点A(0,4)、B(﹣4,4)、C(﹣6,2),请在网格图中进行如下操作:
(1)若该圆弧所在圆的圆心为D点,则D点坐标为 ;
(2)连接AD、CD,则⊙D的半径长为 .(结果保留根号)
(3)∠ADC的度数为 °;
(4)若过点B作圆弧的切线,则切线经过点M(﹣2,5),N(﹣2,6),P(﹣3,4),Q(﹣3,5)四点中的 点(请选择你认为正确的答案写在横线上)
(1)若该圆弧所在圆的圆心为D点,则D点坐标为 ;
(2)连接AD、CD,则⊙D的半径长为 .(结果保留根号)
(3)∠ADC的度数为 °;
(4)若过点B作圆弧的切线,则切线经过点M(﹣2,5),N(﹣2,6),P(﹣3,4),Q(﹣3,5)四点中的 点(请选择你认为正确的答案写在横线上)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/17/e4c80cf7-05ba-4d97-ae75-5055938445ca.png?resizew=174)
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解答题-作图题
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【推荐2】如图,在
的方格纸中,每个小正方形的边长均为
,在方格纸中有一条线段
,点
均在小正方形的顶点上,请按要求画图并计算:
(1)画
,使得
,
,且点
在小正方形的顶点上;
(2)以
为一边画
,点
在小正方形的顶点上,且
的面积为(
)中所画
面积的
倍:
(3)连接
,并直接写出线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/490dbe9310ac070780745e3d504a953e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/4413631e-f386-44ec-ad92-c5926f210a74.png?resizew=163)
(1)画
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6627f846cbb6918158b488bba6a8f290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8a363c828b940f35761b3f0ef83c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5967851275c6e52947dcdedf475a825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5967851275c6e52947dcdedf475a825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a637e8f4e368c079616955509b1717e3.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
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【推荐1】如图,在Rt△ABC中,∠ACB=90°,点D是斜边AB的中点,过点B、点C分别作BE∥CD,CE∥BD.
(1)求证:四边形BECD是菱形;
(2)若∠A=60°,AC=
,求菱形BECD的面积.
(1)求证:四边形BECD是菱形;
(2)若∠A=60°,AC=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/2020/1/14/2376941266034688/2377776177618944/STEM/d1039d539a554d6baf8572fa6440ac61.png?resizew=178)
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【推荐2】已知:如图,在梯形ABCD中,AB∥CD,BC=CD,AD⊥BD,E为AB中点.
(1)求证:四边形BCDE是菱形.
(2)若AD=6,BD=8,求四边形BCDE的周长和面积.
(1)求证:四边形BCDE是菱形.
(2)若AD=6,BD=8,求四边形BCDE的周长和面积.
![](https://img.xkw.com/dksih/QBM/2020/1/7/2371749864636416/2372162463096832/STEM/af0f57dcf0314856bdb6a010e5f8abdf.png?resizew=173)
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【推荐1】图①,图②,图③均是
的正方形网格,每个小正方形的顶点称为格点,小正方形的边长为1,点C,D均在格点上,在图①,图②,图③中,只用无刻度的直尺,在给定的网格中按要求画图,所画图形的顶点均在格点上,不要求写出画法.
(1)在图①中,以线段
为边画一个等腰三角形
,且
的面积为4;
(2)在图②中,以线段
为边画一个轴对称四边形
,且四边形
的面积为10;
(3)在图③中,以线段
为边画一个四边形
,使
,且四边形
的面积为8.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd4be97adde17423d59d86d18318c2c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/4/87c8acdc-a335-46f4-aaa2-a8552f42149d.png?resizew=440)
(1)在图①中,以线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe67036b4671b5d2a5c55b48c4d3bb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26e59b7c0d4a0b312e674b7bb061240b.png)
(2)在图②中,以线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255776b674c55702422c7d39e61ec496.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255776b674c55702422c7d39e61ec496.png)
(3)在图③中,以线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94606fd5df48e92ceec0d21f8bd3ca29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4069e72ceafaa30367891b51d2c06a7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94606fd5df48e92ceec0d21f8bd3ca29.png)
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【推荐2】探究:如图①,在四边形
中,
,
,
于点
.若
,求四边形
的面积.
应用:如图②,在四边形
中,
,
,
于点
.若
,
,
,则四边形
的面积为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b6e08fde74010412a6f14ad4dfbcc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4611ceb2a28f7a7e4d24266d7f99b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d30cd3e53a9df24fe6da5e8a3a7ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
应用:如图②,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4579332087ee585f1cae423a6ae1862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df8003814834287e122a12b64a936dba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ebb33adb2310a6e03918761e68204a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e1a727ba332984ad857b3d25344d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/31/acbc9478-0d9c-42a8-a710-4940243e2174.png?resizew=274)
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【推荐1】如图,每个小正方形的边长都是1,
,
,
,
均在网格的格点上.
是否为直角:______.(填写“是”或“不是”)
(2)直接写出四边形
的面积为______.
(3)找到格点
,并画出四边形
(一个即可),使得其面积与四边形
面积相等.
![](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/727ad3e630a224303d6d3b8ad5c114ba.png)
(2)直接写出四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)找到格点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d70676406f26d339465fe3473c0c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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【推荐2】正方形网格中的每个小正方形的边长都是一个单位,每个小正方形的顶点叫做格点,已知A、B、C均为格点,仅用无刻度的直尺 作出符合下列条件的图形.
(1)在图1中,在
上作出点D,使得
.
向左平移3个单位得到线段
.
(1)在图1中,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236c134aad7d9a21c49c07e924b9a531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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