直线
.
为
、
内部一点时,连接
、
,请直接写出
的度数;
(2)如图2,当点
在直线
上时,点
在
上,将线段
沿
方向平移得到线段
,点
在
上,求证:
;
(3)在(2)的条件下,如图3,点
为线段
上一点,在
的延长线上取点
,连接
、
,若
平分
,
平分
,
,
时,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9418a877bf6a42a7208f0c4390680b90.png)
(2)如图2,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](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/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76c450200478ab51270bcddb5c89db8.png)
(3)在(2)的条件下,如图3,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/737e7b14678f38a306e4d2573fbab325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae626b30192bba5c433d399bba65411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb961c4e24af044c8b16d566537bdbed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/623c64b502ba2e4ec10945b7908866a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6721e15ce070887a318cb903677bd31b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e44d9f2b82b73e7a0917a19f74dbc5f9.png)
更新时间:2023-04-05 09:48:51
|
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【推荐1】如图,直线AB、CD相交于点O,OE平分∠BOC,∠COF=90°.
(1)若∠BOE=64°,求∠AOF的度数;
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【推荐2】如图,AB∥CD,点E是CD上一点,∠AEC=42°,EF平分∠AED交AB于点F,求∠AFE的度数.
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解答题-证明题
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【推荐1】如图,射线
与射线
互相平行,一动点
从点
出发,沿如图的圆弧形曲线途经
,
两点向终点
运动,在运动过程中,我们研究所形成的三个角,
、
、
的关系.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/10/e2ac2479-00ec-4f68-91fb-e0a237f618b5.png?resizew=143)
(1)如图,点P从点A向点
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有怎样的数量关系?直接写答案________.
(2)点
从点
向点
运动的过程中,
、
、
有怎样的数量关系?请画出图形,并证明你的结论.
(3)点
从点
向点
运动的过程中,
、
、
有怎样的数量关系?直接写答案________.
![](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/dad2a36927223bd70f426ba06aea4b45.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93b1d3ba8a6c2acb3540714e99481f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7919fc26c50e67d659bdee8322ec076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea98cd15fa4c868eb83ca260c6d9ae6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/10/e2ac2479-00ec-4f68-91fb-e0a237f618b5.png?resizew=143)
(1)如图,点P从点A向点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93b1d3ba8a6c2acb3540714e99481f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a91f89a0bc06bd1613e4ec4011e6755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea98cd15fa4c868eb83ca260c6d9ae6.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/93b1d3ba8a6c2acb3540714e99481f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a91f89a0bc06bd1613e4ec4011e6755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea98cd15fa4c868eb83ca260c6d9ae6.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93b1d3ba8a6c2acb3540714e99481f8e.png)
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解答题-问答题
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适中
(0.65)
【推荐2】图1是一种网红弹弓的实物图,在两边系上皮筋,拉动皮筋可形成如图2的平面示意图,弹弓的两边可看成是平行的,即,现测得
,
.过点P作
,如图3.
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b16523b4ed5a2d674c60cafaad10500d.png)
(2)根据下面的信息窗.判断此次瞄准是否最准确.
信息窗 当拉起皮筋使 |
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解答题-证明题
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适中
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【推荐1】如图1和图2,矩形ABCD中,E是AD的中点,P是BC上一点,AF∥PD,∠FPE=∠DPE.
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【推荐2】如图,
,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba02910a01689f636c71116e96dfdf33.png)
(2)若
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解答题-证明题
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适中
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【推荐2】如图,已知
∥
,
,
,
(1)下面是证明
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∥
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( )
又
,
( )
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∥
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe361c266b60d4e94d824d5770ca0d64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6636dafdc27f2cee9ad8e077c4ed329c.png)
(1)下面是证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a2fd4be3ef6a91bab0592b98f69741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/574ae28238ee445824235687e5cee328.png)
又
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c08980b6afedc04aa04f385791f0163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c7d9ed884c5ba544493c31434bf4a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://img.xkw.com/dksih/QBM/2020/7/23/2512099453009920/2512168812642304/STEM/b0b59752bce0464f8c90d31f013cb611.png?resizew=275)
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