如图,
,
,
.求
和
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a68771e886b154eb2b7dc0c162f84cb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76ffd241623ec4ee9fd08876464def3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
22-23七年级下·江苏盐城·期中 查看更多[4]
江苏省盐城市阜宁县2022-2023学年七年级下学期期中数学试题安徽省六安市2022-2023学年七年级下学期期中数学试题(已下线)第02讲 探索平行线的性质(2大考点+7种题型+强化训练)-【帮课堂】2023-2024学年七年级数学下册同步学与练(苏科版)(已下线)江苏省七年级下学期期中真题必刷基础60题(39个考点专练)-2023-2024学年七年级数学下学期考试满分全攻略高频考点+重难点讲练与测试(苏科版)
更新时间:2023-08-04 12:03:14
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【推荐1】如图,已知直线MN分别交ED,FC于点A,B,且
.
![](https://img.xkw.com/dksih/QBM/2022/3/23/2942434790383616/2945432867078144/STEM/7bf702ac-c3f5-4dd0-a7ab-a6bfd7ea5731.png?resizew=213)
(1)求证:
;
(2)若
,
,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8266cd115eeefeb4db6a8663cb0c4898.png)
![](https://img.xkw.com/dksih/QBM/2022/3/23/2942434790383616/2945432867078144/STEM/7bf702ac-c3f5-4dd0-a7ab-a6bfd7ea5731.png?resizew=213)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36265f69a8d6058b623a070dc7f4ed4c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ca6846b7008e5f5fa68972cefcd6cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
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【推荐2】已知:如图,
是等边三角形,D是
上一点,
,
,求证:
是等边三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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【推荐1】指出下列命题的题设和结论,并判断它们是真命题还是假命题,如果是假命题,举出个反例.
(1)两个角的和等于直角时,这两个角互为余角;
(2)同旁内角互补.
(1)两个角的和等于直角时,这两个角互为余角;
(2)同旁内角互补.
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【推荐2】如图,已知a
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
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