已知直线
及其两侧两点A、B,如图.
(1)在直线
上求一点P,使PA=PB; (保留尺规作图痕迹)
(2)在直线
上求一点Q,使
平分∠AQB.
![](https://img.xkw.com/dksih/QBM/2017/10/7/1790292744044544/1790783208693760/STEM/1ea8670c954247179da2294e36480f83.png?resizew=9)
(1)在直线
![](https://img.xkw.com/dksih/QBM/2017/10/7/1790292744044544/1790783208693760/STEM/1ea8670c954247179da2294e36480f83.png?resizew=9)
(2)在直线
![](https://img.xkw.com/dksih/QBM/2017/10/7/1790292744044544/1790783208693760/STEM/1ea8670c954247179da2294e36480f83.png?resizew=9)
![](https://img.xkw.com/dksih/QBM/2017/10/7/1790292744044544/1790783208693760/STEM/1ea8670c954247179da2294e36480f83.png?resizew=9)
![](https://img.xkw.com/dksih/QBM/2017/10/7/1790292744044544/1790783208693760/STEM/8b50dc9e3e05407dbf62dd6c6a192b55.png?resizew=266)
更新时间:2017-10-08 12:20:40
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【知识点】 线段垂直平分线的性质解读
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,在
中,点
、
分别在
、
上,
是
的垂直平分线,
,
,
交
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/406496ab-9b30-48a9-9a1d-e4c9dd0b37b6.png?resizew=198)
(1)求证:
平分
;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761a77e11e1e45c2a8b2d34d22cf8e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/406496ab-9b30-48a9-9a1d-e4c9dd0b37b6.png?resizew=198)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1911b7c2e11c3531ff598aa1f3beca8f.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】如图,在单位长度为1的正方形网格中建立平面直角坐标系,一个圆弧经过网格的交点为A、B、C.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/22/abd1fa10-8d50-46bc-a4bd-5c0e93adf380.png?resizew=312)
(1)在图中标出该圆弧所在圆的圆心D,并连接AD、CD;
(2)在(1)的基础上,完成下列填空:
①写出点的坐标:C_________、D________.
②△DAC的面积是_________.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/22/abd1fa10-8d50-46bc-a4bd-5c0e93adf380.png?resizew=312)
(1)在图中标出该圆弧所在圆的圆心D,并连接AD、CD;
(2)在(1)的基础上,完成下列填空:
①写出点的坐标:C_________、D________.
②△DAC的面积是_________.
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