图①、图②、图③均是
的正方形网格,每个小正方形的边长均为1,每个小正方形的顶点称为格点,点
、
、
均为格点.只用无刻度的直尺,分别在给定的网格中按下列要求作图,保留作图痕迹,不要求写出作法.
(1)在图①中作
的高
.
(2)在图②中的边
上找一点
,连接
,使
.
(3)在图③中
内(不包含边界)找一点
,连接
,
,使
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd4be97adde17423d59d86d18318c2c.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://img.xkw.com/dksih/QBM/editorImg/2023/9/16/8f34eaa7-1655-4d41-a7d8-1337c662ed91.png?resizew=407)
(1)在图①中作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)在图②中的边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79860c26b5cb63e923095d40981ab853.png)
(3)在图③中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df95655cf31efc2a3405be65e6ac8c39.png)
更新时间:2023-09-13 18:43:26
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】(1)如图①,在线段
上找点O,连结
,使
平分
的面积;
(2)如图②,在线段
上找点Q,连结
,使
;
(3)如图③,已知每个小正方形的边长为1个单位,线段
,
是
的边
上的高,请直接写出
_____.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)如图②,在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c018b37259f3ead2ab2d94bd744f44d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9477e95ea5780ef53d7f22fe2f40c3de.png)
(3)如图③,已知每个小正方形的边长为1个单位,线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6609cc372831939ad4beb3770b0b0ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cfa296598884a0dab43841422fa0b12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86755a02b5ed2904435875b84ca2da3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539f6d4d926142b0bcb5515786eddf30.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】请认真阅读,回答下面问题:如图,
为
的中线,
与
相等吗?(友情提示:
表示三角形面积)
![](https://img.xkw.com/dksih/QBM/2019/8/5/2262161022197760/2262220029673472/STEM/aee94a60f0494f75b10cb17c4bb1ed1e.png?resizew=407)
解:过
点作
边上的高
,
∵
为
的中线
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6703a78d8d161ec1b7bcd5dcfe45b22e.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0220a8e9b0541d0b3b9c04cf5ef77601.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62590293b16240e339a33d6f983dbc71.png)
(1)用一句简洁的文字表示上面这段内容的结论;
(2)利用上面所得的结论,用不同的割法分别把下面两个三角形面积4等分,(只要割线不同就算一种)
(3)已知:
为
的中线,点
为
边上的中点,若
的面积为20,
,求点
到
边的距离为多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/753842832ac2068a7823621fd3cdf52f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c62562741d0ca302918ee079737b4e15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/159ea69ab0079fde782410d2d16b3f01.png)
![](https://img.xkw.com/dksih/QBM/2019/8/5/2262161022197760/2262220029673472/STEM/aee94a60f0494f75b10cb17c4bb1ed1e.png?resizew=407)
解:过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6703a78d8d161ec1b7bcd5dcfe45b22e.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a6c3819854ce33735d43060a62ce00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0220a8e9b0541d0b3b9c04cf5ef77601.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62590293b16240e339a33d6f983dbc71.png)
(1)用一句简洁的文字表示上面这段内容的结论;
(2)利用上面所得的结论,用不同的割法分别把下面两个三角形面积4等分,(只要割线不同就算一种)
(3)已知:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb3d1070981fed5ca65a34bb2282e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】四边形ABCD如图所示,请用尺规作图的方法,在BC上作一点F,使得FA=FB.(保留作图痕迹,不写作法)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/17/bd597583-4f91-45d5-82aa-0f9f34c1aab6.png?resizew=156)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】如图,△ABC中,∠BAC=90°.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/31/e7b534e9-67f3-4bac-84e0-c5621e87326d.png?resizew=116)
(1)尺规作图:在BC上求作E点,使得△ABE与△ABC相似;(保留作图痕迹,不写作法)
(2)在(1)的条件下,AC=3,AB=4,求△AEC的周长.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/31/e7b534e9-67f3-4bac-84e0-c5621e87326d.png?resizew=116)
(1)尺规作图:在BC上求作E点,使得△ABE与△ABC相似;(保留作图痕迹,不写作法)
(2)在(1)的条件下,AC=3,AB=4,求△AEC的周长.
您最近一年使用:0次