(1)利用网格画四边形
任意两边的垂直平分线,设它们相交于点
;
(2)点
(填“在”或“不在”)另外两条边的垂直平分线上;
(3)把顶点
向左移动8格,以上结论 (填“成立”或“不成立”);
(4)直接写出当四边形满足什么条件时,四边的垂直平分线交于一点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(3)把顶点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(4)直接写出当四边形满足什么条件时,四边的垂直平分线交于一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/10/f187ea2d-e658-48e1-ab4c-4a1cf55d1f76.png?resizew=269)
更新时间:2024-01-03 22:09:02
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相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,在
中,按如下步骤尺规作图:
①以点A为圆心,
长为半径画弧;
②以点B为圆心,
长为半径画弧,两弧相交于点D;
③连接
,与
交于点E,连接
,
.
吗?为什么?
(2)分析线段
,
的位置关系;
(3)当
时,请探究四边形
是什么特殊四边形,并证明你的结论;
(4)当
,
,现将四边形
通过割补,拼成一个正方形,那么这个正方形的边长是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
①以点A为圆心,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
②以点B为圆心,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
③连接
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f4053258f0dd2d77db2cbce04ade37a.png)
(2)分析线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c593ebdb2f1934a0cb56f8c44f454f8.png)
(4)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e04947c608f4b7f67b18e8decb05f70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7c310e8859d36c532f2074dde3d934d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c593ebdb2f1934a0cb56f8c44f454f8.png)
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解答题-证明题
|
适中
(0.65)
名校
【推荐2】工人师傅经常利用角尺平分一个任意角.如图所示,
是一个任意角,在边
、
上分别取
,移动角尺,使角尺两边相同的刻度分别与点
、
重合.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/2c0d8f74-a9e0-414c-acae-1e370077be6d.png?resizew=187)
(1)求证:
是
的平分线;
(2)连接
,判断
与
的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/2c0d8f74-a9e0-414c-acae-1e370077be6d.png?resizew=187)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
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解答题-作图题
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适中
(0.65)
【推荐1】(1)已知:如图1,线段CD与
,通过作图求一点P,使
,并且点P到
两边的距离相等.(保留作图痕迹,不写作法)
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893656498790400/2950961780023296/STEM/2eef94e1-b018-45c7-a9ae-c42180282a06.png?resizew=216)
(2)已知:如图2,点O在
的外部,且
,点O到
两边的距离相等.问:
一定成立吗?若一定成立,请证明;若不一定成立,请画图说明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed66431681da1db8f7cb0f40cd19201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893656498790400/2950961780023296/STEM/2eef94e1-b018-45c7-a9ae-c42180282a06.png?resizew=216)
(2)已知:如图2,点O在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c8dbc31b2e14067ef2f34b4e25f114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893656498790400/2950961780023296/STEM/df527b25-2867-423d-acba-fcd419502350.png?resizew=144)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】几何图形中,两条线段乘积关系的构造往往可以借助相似三角形的比例关系去关联…….
【模型认识】
(1)如图①,在四边形
中,点E在边
上,连接
,
.
(Ⅰ)求证:
;
(Ⅱ)
与
满足的数量关系为______;
(2)如图②,在
中,
,
,点D在
外,
,连接
并延长到点E,
,点N在
上,
交
于点M,
,求证:
.
(3)如图③,在
中,
,点D在
外,D到A的距离等于
,过点D作直线l,使l分别交
于点
,且平分
的面积.(要求:用直尺和圆规作图;保留作图的痕迹,写出必要的文字说明.)
【模型认识】
(1)如图①,在四边形
![](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/d190f1784e150edb9dd6dfd3cf4eb0e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c30583f2a4aca915134f41b452e4e7d.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e70e3049313d1f7f1770e1129fbf10a.png)
(Ⅱ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157b42da58d55daad27d98b2fec15ff.png)
(2)如图②,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ddd49625097d0a78df7170be4f882e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34ba320088e37f65084b65e42ec3caf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d2ff51339f84fde17217ed2fc08163f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa30cb72ac1effd9a68c124cdf953341.png)
(3)如图③,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](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/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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