(2019•房山区二模)阅读下面材料:小明遇到一个问题:如图,
,点
在射线
上,点
在
内部,用直尺和圆规作点
,使点
同时满足下列两个条件(要求保留作图痕迹,不必写出作法);
.点
到
,
两点的距离相等;
.点
到
的两边的距离相等.
小明的作法是:
①连接
,作线段
的垂直平分线交
于
,交
于
;
②作
的平分线交
于点
.
所以点
即为所求.
根据小明的尺规作图过程,
(1)使用直尺和圆规,补全图形;
(2)证明:
垂直平分线段
,点
在直线
上,
.
平分
,
点
到
的两边的距离相等 (填推理的依据).所以点
即为所求.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
小明的作法是:
①连接
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
②作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
所以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
根据小明的尺规作图过程,
(1)使用直尺和圆规,补全图形;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173f7d26d069c0f16a0f6fcb517aa28c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b88795a10016f3733b6cd6a6e328ce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cd84460903114fae02d1c9e351aa12f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/04c94c1c-a1c2-4edd-9eb4-76eedc9db7ac.png?resizew=150)
2020九年级·北京·专题练习 查看更多[1]
(已下线)专题03 尺规作图依据题-决胜2020年中考数学压轴题全揭秘精品(北京专用)
更新时间:2020-04-30 20:31:19
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】如图,
中,
,
,垂足为D.
![](https://img.xkw.com/dksih/QBM/2022/3/30/2947478531186688/2949577622904832/STEM/951a0650-3980-4240-ab3f-031424e46185.png?resizew=173)
(1)求作
的角平分线CQ(要求:尺规作图,保留作图痕迹,不写作法);
(2)CQ交AD于P,若
,
,求AP的长.
![](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/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://img.xkw.com/dksih/QBM/2022/3/30/2947478531186688/2949577622904832/STEM/951a0650-3980-4240-ab3f-031424e46185.png?resizew=173)
(1)求作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)CQ交AD于P,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26fdd8e57562ba94e10e7f1d770826d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ca8a5b931744119860211fbd7418b6.png)
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解答题-证明题
|
适中
(0.65)
真题
【推荐2】如图,在
中,
,
的平分线
交
于点D,
的平分线
交
于点E.以
上的点O为圆心,
为半径作
,恰好过点E.
(1)求证:
是
的切线;
(2)若
,
,求
的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/26/fe3ee54c-bac3-4fae-946f-b748fa066c60.png?resizew=266)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7d2a2da5144f0bf6ce091c56b3d5a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d32a60c6dcca30e0817aaf648b49ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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解答题-作图题
|
适中
(0.65)
名校
【推荐1】在如图中按照下列要求画图.
![](https://img.xkw.com/dksih/QBM/2022/3/4/2929000929714176/2930987697455104/STEM/e4deee6e-553d-4668-b855-3407ca8525f8.png?resizew=224)
(1)画射线
、直线
.
(2)用直尺和圆规作图(保留作图痕迹).
①作出
的平分线
.
②作出线段
的中点M.
③在
的延长线上作点E,使
.
![](https://img.xkw.com/dksih/QBM/2022/3/4/2929000929714176/2930987697455104/STEM/e4deee6e-553d-4668-b855-3407ca8525f8.png?resizew=224)
(1)画射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)用直尺和圆规作图(保留作图痕迹).
①作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
②作出线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
③在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/789d2fa74e171e6c42784d3761340a0b.png)
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解答题-作图题
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适中
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名校
【推荐2】如图,
是菱形
的对角线,
,请用尺规作图,在
上找一点
,使
.(不要求写作法,保留作图痕迹).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f5796e87531209a2eb8874fe7e0c93.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/caaf95bc-8222-433d-92df-64c15ce79196.png?resizew=220)
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解答题-证明题
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适中
(0.65)
【推荐1】在矩形
中,
,
,点 Q 在线段
上,点 P 在线段
上,且
,连接
,过点 P 作
,
与边
相交于点 E,与边
相交于点 F,连接
.
(1)求线段
的长
(2)求证:
;
(3)试探究线段
,
,
三者之间的等量关系, 并加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/574dc284fb9e74d65cf0c79a978d65de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65972bd0841751acde36d426dd46ca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3d566704b44ea4ef1f99c37bd46902.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/3/a60d9f80-fae1-462e-a17a-acf1ba14df08.png?resizew=164)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c581dab991aeadf06d972e47673ea8.png)
(3)试探究线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3d566704b44ea4ef1f99c37bd46902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
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解答题-问答题
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名校
【推荐2】如图所示,在△ABC中,∠C=90°,∠BAC=60°,AB的垂直平分线DE交AB于D,交BC于E,若CE=3cm,求BE的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/20/6796e62f-7fa6-40ac-b80c-4d35d53a30cb.png?resizew=127)
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解答题-作图题
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【推荐1】作图题:如图,A、B、C三家超市,现欲建一个批发市场给三家超市供货,若要使此批发市场到三家超市的距离相等,批发市场应选在哪个位置?
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解答题-作图题
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【推荐2】一辆货车在公路(直线CD)上由点C向点D方向行驶,村庄A、B分别位于道路CD的两侧,司机师傅要在公路上选择一个货物的下货点.
(1)请在CD上确定一个下货点E,使点E到村庄A的距离最近,画出图形并写出画图的依据;
(2)请在直线CD上确定一点O,使点O到村庄A、B的距离之和最小,画出图形并写出画图的依据.
(1)请在CD上确定一个下货点E,使点E到村庄A的距离最近,画出图形并写出画图的依据;
(2)请在直线CD上确定一点O,使点O到村庄A、B的距离之和最小,画出图形并写出画图的依据.
![](https://img.xkw.com/dksih/QBM/2016/2/25/1573975893434368/1573975899668480/STEM/01481bd32acd42ee9e43b0524eccfea3.png)
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