1 . 综合应用
如图1,直线
与x轴交于点B,直线
与x轴交于点
,
、
交于y轴上一点A.
的表达式;
(2)坐标探究:过x轴上一点
,作
于点E,交y轴于点F,求E点坐标;
(3)规律探究:将
将向左平移m个单位长度(
)得到图2,
与y轴交于点P(点P不与A点和C点重合),在
的延长线上取一点Q,使
,连接
交x轴于M点.请探究
向左平移的过程中,线段
的长度的变化情况?
如图1,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2566d21b3d25c7eff896134271fb37c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0eb2cfcdd67e603516c009b3a75f18d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(2)坐标探究:过x轴上一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/986415cd08b88dc74b63dce4cf06e7b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
(3)规律探究:将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8adc17e010e3900524dfe85f2494e080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0a847fa535931eda43a437c575ed75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4cfef623a9534b5708df5f95f1760a5.png)
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名校
2 . 如图,
是等边三角形,D是线段
上一点(不与点B,C重合),连接
,点E,F分别在线段
的延长线上,且
,点D从B运动到C的过程中,
周长的变化规律是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/7a551915-b823-4c87-b175-50b7e3e05ba4.png?resizew=188)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f7f4cb7a4ef888e5235b3ea7cd5d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/7a551915-b823-4c87-b175-50b7e3e05ba4.png?resizew=188)
A.不变 | B.一直变小 | C.先变大后变小 | D.先变小后变大 |
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16卷引用:北京市昌平区2020-2021学年八年级上学期期末数学试题
北京市昌平区2020-2021学年八年级上学期期末数学试题(已下线)第19讲 等腰三角形(讲练)-2021年中考数学一轮复习讲练测(北京)(已下线)必刷卷05-2021年中考数学考前信息必刷卷(河北专用)福建省福州市鼓楼区福州杨桥中学2021-2022学年八年级上学期期中数学试题福建省福州市福州杨桥中学2021-2022学年八年级上学期期中数学试题河南省信阳市固始县2021-2022学年八年级上学期期末数学试题河南省郑州市中牟县郑州东枫外国语学校(东校区)2020-2021学年七年级下学期期中数学试题河南省郑州市中原区郑州外国语中学2021-2022学年七年级下学期期末数学试题辽宁省沈阳市2022-2023学年八年级下学期数学阶段测试试题(已下线)期末难点特训(一)选填压轴50道-【微专题】2022-2023学年七年级数学下册常考点微专题提分精练(北师大版)福建省福州市鼓楼区杨桥中学2023-2024学年八年级上学期期中模拟数学试题北京大学附属中学2023-2024学年八年级上学期期中数学试题福建省福州市平潭一中教研片2023-2024学年八年级上学期期中数学试题(已下线)八年级数学上学期期中模拟卷(提高卷)-【题型分类精粹】2023-2024学年八年级数学上学期期中期末复习讲练系列【考点闯关】(人教版)浙江省杭州市滨江区江南实验学校2023-2024学年八年级上学期期中数学试题(已下线)江苏省泰州市姜堰区实验初级中学2023-2024学年八年级上学期数学独立作业11.3
真题
3 . 在
中,
,
,直线
经过点
,过点
、
分别作
的垂线,垂足分别为点
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/3/ed93d9ac-7ab9-4de7-bc4a-4e4a68115433.png?resizew=550)
(1)特例体验:
如图①,若直线
,
,分别求出线段
、
和
的长;
(2)规律探究:
①如图②,若直线
从图①状态开始绕点
旋转
,请探究线段
、
和
的数量关系并说明理由;
②如图③,若直线
从图①状态开始绕点A顺时针旋转
,与线段
相交于点
,请再探线段
、
和
的数量关系并说明理由;
(3)尝试应用:
在图③中,延长线段
交线段
于点
,若
,
,求
.
![](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/0f85fca60a11e1af2bf50138d0e3fe62.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://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/3/ed93d9ac-7ab9-4de7-bc4a-4e4a68115433.png?resizew=550)
(1)特例体验:
如图①,若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcfa68f5a67f2546c4e6688504e490e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e486a1aad96167ff62f6fb5136e0bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(2)规律探究:
①如图②,若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0879cb80d6bf8504c8fe6291ec6915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
②如图③,若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64c7e12b934f2c641ac44f1c9957b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(3)尝试应用:
在图③中,延长线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a0268d04b9dea7629af27af9a0285a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82773737609e65dea3c5c67099f1b10d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5bf50d8f66b1aa674ec06c05cd6c651.png)
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(已下线)专题10 平行线与三角形-2022年中考数学真题分项汇编(全国通用)(第2期)(已下线)第05讲 一线三垂直模型构造全等三角形-【多题一解&一题多解】冲刺2023年中考数学满分应对方法与策略(全国通用)湖南省郴州市永兴县树德初级中学2022-2023学年九年级下学期开学考试数学试题(已下线)XDRzkgssxzw9992022年湖南省湘潭市中考数学真题
4 . 如图,在平面直角坐标系中,点
、
、
的坐标分别为(1,0),(0,1),
.一个电动玩具从坐标原点
出发,第一次跳跃到点
,使得点
与点
关于点
成中心对称;第二次跳跃到点
,使得点
与点
关于点
成中心对称;第三次跳跃到点
,使得点
与点
关于点
成中心对称:第四次跳跃到点
,使得点
与点
关于点
成中心对称;第五次跳跃到点
,使得点
与点
关于点
成中心对称;…,照此规律重复下去,则点
的坐标为( )
![](https://img.xkw.com/dksih/QBM/2020/10/31/2583128427601920/2585203848085504/STEM/16b6048b-f99f-4ed9-9a52-9cf816804681.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://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee50575e3ebd56c4f46dd0bbf8e55d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee50575e3ebd56c4f46dd0bbf8e55d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e24e843f778f53af4f3c9e25faa809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63be95225b55df87368caaf221adf29e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee50575e3ebd56c4f46dd0bbf8e55d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce19b8fe68525d8f131b50b72e47a1e.png)
![](https://img.xkw.com/dksih/QBM/2020/10/31/2583128427601920/2585203848085504/STEM/16b6048b-f99f-4ed9-9a52-9cf816804681.png)
A.(2,2) | B.![]() | C.![]() | D.![]() |
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5 . 如图,正方形ABCD的对角线相交于点O,点O也是正方形A′B′C′O的一个顶点,如果两个正方形的边长都等于1,那么正方形A′B′C′O绕顶点O转动,两个正方形重叠部分的面积大小有什么规律?请说明理由.
![](https://img.xkw.com/dksih/QBM/2019/2/18/2143355108179968/2144938063790080/STEM/a4cc1ea711f8485aa31b035efac2eee5.png?resizew=97)
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