如图,已知
,点E在
的延长线上,连接
交
于点F,且
.
的理由;
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66108d2c5bbdb74528a022a501d4d3cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fbf7099d2fcf8525f35732174225a5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81459c32574ff83005aa10043cfc68d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ccdccf6ca4ab39cc41fe3f7afc2846d.png)
2023七年级下·浙江·专题练习 查看更多[3]
(已下线)核心考点01 平行线-【满分全攻略】2022-2023学年七年级数学下学期核心考点+重难点讲练与测试(浙教版)浙江省金华市金东区光南教育集团2022-2023学年七年级下学期3月月考数学试题浙江省湖州市长兴县2023-2024学年七年级下学期期中数学试题
更新时间:2023-04-22 23:16:53
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解答题-问答题
|
适中
(0.65)
【推荐1】如图,已知
,顶点
分别与顶点
对应,据此可以判断图中有哪几组直线互相平行?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8f7a3cf5a6acc41c4932eb8548e9e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92d38160532e95012fdfbc2a1be264b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369ee0fb325873bb7bb18fae98184622.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/1/655d9794-fc30-4cf4-8322-6134b7c1a083.png?resizew=197)
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解答题-证明题
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适中
(0.65)
【推荐2】已知:线段
,以
为公共边,在
两侧分别作
和
,并使
.点E在射线
上.
,求证:
;
(2)如图2,若
,请探究
与
的数量关系,写出你的探究结论,并加以证明;
(3)如图3,在(2)的条件下,若
,过点D作
交射线于点F,当
时,求
的度数.
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1beff025b32f688316009552d2fd8e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0dd77ccdd91fbd630254938b3502d22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dceb5cc71fc50f20649f6b9535fd914.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d5ff57f147aa0628fdd47899b5a132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e7106619c08f2bcc1d21f846e8a0de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
(3)如图3,在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e83ad09855a36ae1e8af3ecbd697db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fda6d76fb350332472e76fefcca6a9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dc24a1158e61c6bc542108934103ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
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名校
【推荐1】(1)如图①,四边形
,
与
互补,
,点E、F在线段
、
上且
,若
,求:
的度数;
(2)如图②,若点E、F在线段
、
的延长线上,其余条件均不变,求:
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a16dc02090b6e9263555061f14fbc8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b24dfa37067ff455888ebe076eeb1fb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01847a44e59cfd6c285af241c64f04cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb3748300134501953d6b1c3a905026.png)
(2)如图②,若点E、F在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb3748300134501953d6b1c3a905026.png)
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(0.65)
名校
【推荐2】如图,在
中,
,
,延长AB至点D,连接CD,以CD为直角边作等腰直角三角形
,
,连接BE.试说明:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/f2d54a0b-7971-427b-b3b5-fa7fa61d11b0.png?resizew=151)
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eba7e2cb2e2390673b83bde332973d6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/f2d54a0b-7971-427b-b3b5-fa7fa61d11b0.png?resizew=151)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c503e29373e8d87134bdb46bd3912910.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c897a54f2e36bc4b52fba74b41c89d2d.png)
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