已知线段
、
(其中
)
(1)尺规作图:作线段
,其中
,
(保留作图痕迹,不用写作法);
(2)在(1)的条件下,点
是
的中点,点
是
的中点,当
、
时,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7091d529281abff275ef19b9197445a7.png)
(1)尺规作图:作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/112445b390c7d5458ac5534270e78d51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa375c3888b332f24e7d0f9b9600c694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/890aea25780f7ba34adb23e799808462.png)
(2)在(1)的条件下,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/507dcb6b-9cde-4617-a4e6-8d1b4c3007b3.png?resizew=176)
更新时间:2021-01-23 09:04:18
|
相似题推荐
解答题-作图题
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【推荐1】已知:线段
,
,如图.
(1)求作四边形
,使得
,
;(要求:尺规作图,不写作法,保留作图痕迹)
(2)在(1)中求作的四边形
中,若点E是
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的中点,
与
相交于点O,求证:点E,F,O在同一条直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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(1)求作四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df4a2a127d89d50d3fde881a9b58ef0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/151adae7bf60f109d3f275fd9fd4e5b6.png)
(2)在(1)中求作的四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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解答题-作图题
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较易
(0.85)
【推荐2】如图:A为线段BC外一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/46edc4a4-788b-4ace-b00f-fd6aab59a20e.png?resizew=127)
(1)求作四边形ABCD,使得AD∥BC,且AD=BC;(要求:尺规作图,不写作法,保留作图痕迹)
(2)在(1)的四边形ABCD中,AC,BD相交于点P,E,F分别为PA,PC的中点,连接BE,DF,求证:BE=DF.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/46edc4a4-788b-4ace-b00f-fd6aab59a20e.png?resizew=127)
(1)求作四边形ABCD,使得AD∥BC,且AD=BC;(要求:尺规作图,不写作法,保留作图痕迹)
(2)在(1)的四边形ABCD中,AC,BD相交于点P,E,F分别为PA,PC的中点,连接BE,DF,求证:BE=DF.
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解答题-计算题
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【推荐1】如图,A、B、C、D四点在一条直线上,根据图形填空:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/d74718f8-caa0-4b49-aff1-0dba90256a26.png?resizew=311)
(1)图中共有线段_______条;
(2)若C是
的中点,
,
,求线段
的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/d74718f8-caa0-4b49-aff1-0dba90256a26.png?resizew=311)
(1)图中共有线段_______条;
(2)若C是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede0bcdce110dbe6f46a4a7ba7e6059d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5181b97a7e43959b8455680157c3b644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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解答题-问答题
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【推荐2】如图,已知线段
,
,
在线段
上,且
.若
是线段
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是线段
的中点,求线段
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b79850d6b00a67110e77a33d1c46b5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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解答题-问答题
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较易
(0.85)
【推荐1】如图,点
,
将线段
分成
的三部分,
,
,
分别是
,
,
的中点,且
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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解答题-作图题
|
较易
(0.85)
名校
【推荐2】如图,已知两点A,B和线段m.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/460d026e-9e31-4081-ad0f-bce130cc6f57.png?resizew=202)
(1)尺规作图:画线段
,并在线段
上截取
,使
;(保留作图痕迹,不写作法)
(2)在上图中,若
,
,点D是线段
的中点,求线段
的长.
请将下面的解题过程补充完整:
解:
________-________,
,
,
________.
∵点D是线段
的中点,
________.(理由:________)
________.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/460d026e-9e31-4081-ad0f-bce130cc6f57.png?resizew=202)
(1)尺规作图:画线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a440a37433c12760de16e50556604ab3.png)
(2)在上图中,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
请将下面的解题过程补充完整:
解:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cda909d442900fb2de666a1f3ac4d4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f5c2d3e232c5b1b9d976a55e4d09.png)
∵点D是线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d62d31e2c75adc6a4fbaeaec26c01a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8c340bdbf1176b84a6669efb7523bd.png)
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