将一副三角板(含有
角的直角三角板
和含有
角的直角三角板
)按如图﹣1摆放在直线
上,
平分
,
平分
.
(1)求
的度数;
(2)如图﹣2,将三角板
绕着点B以每秒
的速度顺时针旋转,设旋转时间为t秒
,
平分
.
①在旋转过程中,
的度数是否发生改变?若不变,求出
的度数;若改变,请说明理由;
②在旋转过程中,是否存在某个时刻,
与
中,其中一个角是另一个角的两倍?若存在,求出所有满足题意的t值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b342d5cb6dd1c84a82f6aca68ed829c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c030b25575d683af91c06e6a3e4f463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4fb09625229cec52a12e634c1dc863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c4eccda4edcee29a5f15609e85106df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4978a7d7a5afa4a227a66be2fe5da11b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/999a995a6d07c561ce64e8952994160a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad583b07d49c2198f2aafd9940012ddd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/9/455af5f2-2b73-4a1e-a5ad-927c5c367770.png?resizew=557)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1f021e2c06d2b8b0d98f3e3ce2c310.png)
(2)如图﹣2,将三角板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e191a233da08a8840990ced95a6cc718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/534813f611462d832fd0fad75455f4d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1358e073cf900f149bd755b853fd6f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03606fe8db46d4f190dc219373d304fa.png)
①在旋转过程中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f32c60bc94b6117235b6172cb977309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f32c60bc94b6117235b6172cb977309.png)
②在旋转过程中,是否存在某个时刻,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e081b82c1885c3c961a5540f112fc3f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35a37b5e667e7c4fb27d4bf4b929a2a9.png)
更新时间:2024-02-11 09:05:44
|
相似题推荐
解答题-问答题
|
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(0.4)
名校
【推荐1】如图,
为数轴的原点,
,
为数轴上的两点,点
表示的数为
,点
表示的数为100.
![](https://img.xkw.com/dksih/QBM/2014/12/12/1573767969292288/1573767975575552/STEM/0d3b030ea9f0446fb0aa8c3a6e979dfa.png?resizew=266)
(1)
、
间的距离是 .
(2)若点
也是数轴上的点,点
到
的距离是
到原点
的距离的3倍,求点
表示的数.
(3)若当电子蚂蚁
从
点出发,以6个单位长度
的速度向左运动,同时另一只电子蚂蚁
恰好从
点出发,以4个单位长度
的速度向左移动,设两只电子蚂蚁在数轴上的
点相遇,那么点
表示的数是多少?
(4)若电子蚂蚁
从点
出发,以8个单位长度
的速度向右运动,同时另一只电子蚂蚁
恰好从点
出发,以4个单位长度
的速度向右运动.设数轴上的点
到原点
的距离等于点
到点
的距离的一半(点
在原点右侧),有下面两个结论:①
的值不变;②
的值不变,请判断哪个结论正确,并求出正确结论的值.
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f86b86a6ccdf2c077d195db7bc380ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2014/12/12/1573767969292288/1573767975575552/STEM/0d3b030ea9f0446fb0aa8c3a6e979dfa.png?resizew=266)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(3)若当电子蚂蚁
![](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/14a56110150a56ba1cc1af4f4d26e932.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40c9d1747587080ffb0b772435a5a182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(4)若电子蚂蚁
![](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/40c9d1747587080ffb0b772435a5a182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40c9d1747587080ffb0b772435a5a182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a1df8272d04a6791089d502a1f9fca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2683b58d4980edce1e5e1071919a9737.png)
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【推荐2】定义:点O与点A之间的距离表示为OA,点O与点B之间的距离表示为OB.若点A、点B分别在原点的两侧,OA:OB=4:5,点A对应的数是-16
(1)求点B对应的数及AB的长 ;
(2)点P为A、B之间的动点,其对应的数为x,是否存在点P,使得AP=2OP,若存在,请求出x的值,若不存在,请说明理由
(3)在(1)的条件下,若点N、M分别从A、O同时向右出发,速度分别3个单位长度/秒,1个单位长度/秒,N点到达B点后,再立即以同样的速度返回点A后停止,M点到达B点立即停止,设它们的移动时间为t秒,请用含t的代数式直接表示M、N两点之间的距离
![](https://img.xkw.com/dksih/QBM/2021/12/6/2866760744189952/2868906057916416/STEM/6724f6ac-f461-4f40-a6e3-661264f0a044.png?resizew=362)
(1)求点B对应的数及AB的长 ;
(2)点P为A、B之间的动点,其对应的数为x,是否存在点P,使得AP=2OP,若存在,请求出x的值,若不存在,请说明理由
(3)在(1)的条件下,若点N、M分别从A、O同时向右出发,速度分别3个单位长度/秒,1个单位长度/秒,N点到达B点后,再立即以同样的速度返回点A后停止,M点到达B点立即停止,设它们的移动时间为t秒,请用含t的代数式直接表示M、N两点之间的距离
![](https://img.xkw.com/dksih/QBM/2021/12/6/2866760744189952/2868906057916416/STEM/6724f6ac-f461-4f40-a6e3-661264f0a044.png?resizew=362)
![](https://img.xkw.com/dksih/QBM/2021/12/6/2866760744189952/2868906057916416/STEM/09fcf0f4-b93b-4728-b1b4-1ffb29c679ef.png?resizew=362)
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【推荐3】汛期即将来临,防汛指挥部在某水域一危险地带的两岸各安置了一探照灯,便于夜间察看河水及两岸河堤的情况,如图1,探照灯
射出的光束自AM顺时针旋转至AN便立即回转,探照灯
射出的光束自BP顺时针旋转至BQ便立即回转,两灯不停交叉照射巡视.若探照灯
射出的光束的转动速度是
/秒,探照灯
射出的光束的转动速度是
/秒,且
,
满足
,假定这一带水域两岸河堤是平行的,即
,且
.
,
的值.
(2)如图2,两探照灯同时转动,在探照灯
射出的光束到达AN之前,两探照灯射出的光束交于点
,若
,求
的度数.
(3)若探照灯
射出的光束先转动40秒,探照灯
射出的光束才开始转动,在探照灯
射出的光束第一次到达BQ之前,当两探照灯的光束互相平行时,请直接写出探照灯
转动的时间.
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1db24f4159ce2a7d1d5f4567a9517a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b67c61649ca1632209117f3dea4ed1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c28d65cd0d51b1e7f7c66550a1e8218d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/684b5f952ac5a3645cf97339d3554e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e603d5cbbd35815bbfd2b83574e86f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)如图2,两探照灯同时转动,在探照灯
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d4c3ac81cd5c1cd0dbfbe617e680a28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
(3)若探照灯
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/5963abe8f421bd99a2aaa94831a951e9.png)
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【推荐1】如图
,在平面内有直线
和直角三角板
,点
在直线
上,
,如果将三角板
移动使得直角顶点
与点
重合.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/e7c16b2f-fa5a-495f-bc2f-eb1cd6edfc17.png?resizew=335)
(1)如图
若
,当直角三角板的边
与
重合时,则
______
;
(2)如图
若
,将直角三角板
绕点
转动,如果
始终在
的内部,试猜想
和
有怎样的数量关系?并说明理由.
(3)若
,将直角三角板
绕点
转动到某个位置,若
恰好平分
,直接写出
的度数(用含
的式子表达),并画出草图.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5b3967aa677f18e92912d2397f4907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/e7c16b2f-fa5a-495f-bc2f-eb1cd6edfc17.png?resizew=335)
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a71bb53109aab57cf279b83839386d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1f08bd1651f93a4303cf3a3b822391.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbb6a70dd29662017ca458e43b7dd777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f55c6ac896ab4277fae2230a6e10b0.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e43329c39f6892727b8396d8ea2f8d46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7307ac7510cf35f74337d368b94da4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed66570f697459aba9daa2eaf9460bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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【推荐2】一副三角板按如图1放置,
与
重合.若先固定其中一块三角板
(含
的角),再将另一块三角板
(含
的角)绕点
顺时针方向旋转
的角
,根据要求解答下列问题.
时,图中
与
的位置关系是___________;
(2)若将三角板
旋转到
与
重叠时(如图3),则
__________度;
(3)当
的一边与
的某一边平行(不共线)时,直接写出旋转角
所有可能的度数;
(4)如图4,连接
.当
时,探究
是一个定值,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efc7b22d85ff04a0ac89743f0bea1f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f57496d722c4665ad6c6c0ada5f6784f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671fdac69c4951a72cc06f6d598044dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(2)若将三角板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9251dff989f7d60db751b73033dee269.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(4)如图4,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1220350be0d8606c2f05e96c996ddd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002183bc94968563f08e505eab50c008.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】已知直线
,直线
与
,
分别交于点E,F,
.将一个直角三角板
按如图1所示放置,使点Q,O分别在直线
,
上,
,
,
,
.
、分别求
与
的度数;
(2)求
的度数;
(3)将直角三角板
沿
向右平移.
①如图2,当点Q与点E重合时,若
恰好平分
,求
的值;
②作
的平分线
,交直线
于点G,在整个平移过程中,直接 写出
的度数(用含
的式子表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.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/c1c45fdf22cc0dbec01abf9cbb6c44ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6c71a0da6a878a5b12bf8a8e784645.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/6bba8e0d0a84be821e404c93852543ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81966a1b8c376ed64e8238b7794f439c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aab385d9f4e198fc081b8905280ac05f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a3a706f7c22aa3b48ca5b81c3c9a573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2334ac570fefa8bcb3f48ef6da9719e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b00f1a518c394838c87a0dbc1f0a03ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a2ca45021ce41a8214772dc2cde8ed.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28f3c18b14330db683d5a14b7975cb87.png)
(3)将直角三角板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6c71a0da6a878a5b12bf8a8e784645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
①如图2,当点Q与点E重合时,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90c780dac29ff8b7df5881d3b33abab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b6a23d521606a35298bbf147f7f830c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
②作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8885284aa0af06fbfb91e0cc4433bfb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/713e8b2f355f28081bc35520bac9fc8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】已知,
,点
为射线
上一点.
,若
,
,则
.
(2)如图
,当点
在
延长线上时,此时
与
交于点
,则
、
、
之间满足怎样的关系,并说明理由.
(3)如图
,当点
在
延长线上时,
平分
,且
,
,
,求
的度数并说明理由.
![](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/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b720da0db715a91f6bb365259b4223a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06960470a4a4e1cfba27107a13ec3e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee2ef38925946da1145a68651da67da9.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd1bc0388e7fad3e849ca39c67f5034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e31edc5b71c488ca9942d70d9298f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1a1c4401de116d394ea1aba543d036e.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/836ea820cf3732508cdd332ceb9395ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bfa20bf23fea7c84d8617f4638d7c16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc97c1a0924a2cb9596fdd68d0dc545.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcca02c57f5859f49f91d445b4a06d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9466286aa08bdbd7002bb35ef218a5d.png)
您最近一年使用:0次