如图,在
中,
,
,以点
为旋转中心把
按顺时针方向旋转
度,得到![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
,点
恰好落在
上,连接
.
(1)求
的度数;
(2)判断
与
的关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/513e9db951ae26b4f51f0c7b05a9bee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c287bb15494297df234f700f9f3a90d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152cfd5011c94e02c1a9cbbd4d8f58bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/22/0301857c-d2df-4b12-8af9-fce451880761.png?resizew=141)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a2db6311e228ed33b6c71d0a5918cf.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
更新时间:2023-08-18 15:17:42
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,如图,在
中,已知
,
,
是
角平分线.求:
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284e282bb1d9fbf8634b3506ee5358ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68e744f480e11f588570c5d6738799f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9940b7a52cfb34f91389c8adac6b69e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/22/a299d6e3-5934-4947-b3d9-fcdbe954dcc3.png?resizew=157)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【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,请说明你的结论:
(3)如图
,
平分
,交
于点
,交
于点
,且
,
,
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/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/072c4701d354e68a37928902b0ab870f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06960470a4a4e1cfba27107a13ec3e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee2ef38925946da1145a68651da67da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.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/bcb1f18da9490d118cbb4431a8eef50d.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445d7497f41656d5d3115dafef213972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/836ea820cf3732508cdd332ceb9395ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42774a918f52ac8aa8b1f5b78a676f17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a3ea90c2cccf1736e975e52dab66c92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7ce1113165cd1d156d303722f99057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78dc633a22560a5fd60dfbe1c0367ff6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9466286aa08bdbd7002bb35ef218a5d.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】已知⊙O的直径BC=10,弦AB=6,点C在⊙O上,∠CAB的平分线交⊙O于点D.
![](https://img.xkw.com/dksih/QBM/2022/8/18/3046990065328128/3069171205308416/STEM/2f5bfaf7111d48be92d97b8ee35854e3.png?resizew=110)
(1)求四边形ABCD的面积;
(2)求AD的长.
![](https://img.xkw.com/dksih/QBM/2022/8/18/3046990065328128/3069171205308416/STEM/2f5bfaf7111d48be92d97b8ee35854e3.png?resizew=110)
(1)求四边形ABCD的面积;
(2)求AD的长.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】将两块斜边长相等的等腰直角三角尺按如图①摆放,斜边
分别交
,
于M,N点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/0f8bdab6-1884-439f-b12c-cbb6daac505d.png?resizew=342)
(1)如果把图①中的
绕点C逆时针旋转
得到
,连接
,如图②.求证:
;
(2)将
绕点C旋转,当点M、N在
上(不与A、B重合)时,线段
之间有一个不变的关系式,请你写出这个关系式,并说明理由.
![](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/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/0f8bdab6-1884-439f-b12c-cbb6daac505d.png?resizew=342)
(1)如果把图①中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0244b876f01c9d979e2a9ede9314bbd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d0d37f3662da87986e8c4c5f943873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd5b523d00d637604000de75eadddd9.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb503c8e3b438518b885bdaefc67e60c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/366635858b24f5969618adfa7f20c7d7.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,已知
是等腰三角形,
,将
绕点B逆时针旋转得到
,点A和点C的对应点分别是点
和点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/03f65d0a-5f15-4902-a858-4e4939793f4a.png?resizew=434)
(1)感知:如图①,当
落在
边上时,
与
之间的数量关系是______
不需要证明
;
(2)探究:如图②,当
落在
边的左侧时,
与
相等吗?如果相等,请证明;如果不相等,请说明理由;
(3)应用:如图③,若
,线段
与线段
相交于点E,则
______ 度
不需要证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cf39c4552ecb2b659f052dc5c0f5eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/03f65d0a-5f15-4902-a858-4e4939793f4a.png?resizew=434)
(1)感知:如图①,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0f0ccc8492a0ccf1eee24867060643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c990db1ac13ded298a66f7f63a612d19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c94232cdfe9b455b517cf60604801b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(2)探究:如图②,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0f0ccc8492a0ccf1eee24867060643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c990db1ac13ded298a66f7f63a612d19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c94232cdfe9b455b517cf60604801b2.png)
(3)应用:如图③,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6024fd4532f5f981deac4582c799a6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ecac2dad4cffdd971fd23deacff3fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a03e7a7e486d8381e612a5db86779a71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5cc1a387d6ba724f6b9c029807e4bfd.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】在
中,
,
,将
绕点
顺时针旋转角
(
),得
,交
于点
,
分别交
、
于
、
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/30c931c0-791b-4340-84f4-4154c48f099c.png?resizew=277)
(1)求证:
;
(2)当
时,试判断四边形
的形状,并说明理由;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e918b70b02a73685e3c536c7f380e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5df59dbf1248622df0a5bade4b30fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7988923407b9abb78ef8ab45829678fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/30c931c0-791b-4340-84f4-4154c48f099c.png?resizew=277)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d87125021a914e8c80eff5d956a9fca.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c96cb3ac8290e09c55d4eb336a8608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fe8b77335bcd5e6caeb7726aabc554.png)
您最近一年使用:0次