如图,
中,
,
的垂直平分线
分别交
、
于点D、E.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/56121aeb-3701-4f11-b31f-614df7abddaa.png?resizew=113)
(1)若
,求
的度数;
(2)若
,
的长为5,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ad037d6d1bddf8930944fd93b5a551b.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/56121aeb-3701-4f11-b31f-614df7abddaa.png?resizew=113)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98daebc4b33db417c0a81a4d6c6830c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76bc8e50eeccced1d7f3bc52e09a7d03.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25931d67d2ed45a9238525210bc3f727.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73636989e83905f8800a865c2b608c43.png)
22-23八年级上·江苏无锡·期中 查看更多[9]
江苏省无锡市梁溪区2022-2023学年八年级上学期期中数学试题(已下线)专题01三角形的证明(知识串讲+热考题型)-2022-2023学年八年级数学下学期期中期末考点大串讲(北师大版)陕西省西安市西咸新区2022-2023学年七年级下学期期末数学试题陕西省咸阳市礼泉县2022-2023学年七年级下学期6月期末数学试题吉林省松原市2022-2023学年八年级上学期期末数学试题山东省聊城市冠县2022-2023学年八年级上学期期末数学试题江苏省苏州市姑苏区草桥中学校2023-2024学年八年级上学期10月月考数学试题广东省韶关市新丰县2023-2024学年八年级上学期期中数学试题山东省济宁市任城区2023-2024学年七年级上学期期中数学试题
更新时间:2023-04-09 11:00:03
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解答题-作图题
|
适中
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【推荐1】如图,已知
是矩形
的对角线.
(1)用直尺和圆规作线段
的垂直平分线,分别交
于点E,F.(保留作图痕迹,不写作法和证明)
(2)连接
,试判断
与
的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/1/e6c9ebb8-87e4-4f1d-8340-b49ea44a0495.png?resizew=183)
(1)用直尺和圆规作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83fe060a37a93ea736e9c3d444809cd0.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7c547efa568cc49326ae560a38744a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
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解答题-证明题
|
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名校
【推荐2】如图,在△ABC中,∠ACB=90°,AC=BC,D为BC边的中点,过点B作BF⊥AB交AD的延长线于点F,CE平分∠ACB交AD于点E.
![](https://img.xkw.com/dksih/QBM/2020/6/20/2488771087736832/2493072625721344/STEM/1bd3d476-0017-49a3-b89a-44f83be9a40f.png?resizew=223)
(1)判断四边形CEBF的形状,并证明;
(2)若AD=
,求BF及四边形CEBF的面积.
![](https://img.xkw.com/dksih/QBM/2020/6/20/2488771087736832/2493072625721344/STEM/1bd3d476-0017-49a3-b89a-44f83be9a40f.png?resizew=223)
(1)判断四边形CEBF的形状,并证明;
(2)若AD=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2d52429c8324350309f77e7209a5c35.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】如图,在
中,
,
,将
绕点
顺时针方向旋转
角
,得到
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/ad57dce9-fcd0-4f9e-9408-ca91fef776f6.png?resizew=123)
(1)当
时,
的度数为______;
的面积为______;
(2)当
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/630d82ae0ed6deb825514e0bc92e74a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac5e50bf09ceadd1715cd1265b5477a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29cb1aca60f31f2939e1afdcc4764d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c021993da445858448d368df42554c8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8f20e3745b76031e0bf6f5a4a860165.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/ad57dce9-fcd0-4f9e-9408-ca91fef776f6.png?resizew=123)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c69a23d106fd34aa17b22e9c9a8de36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4903a697ba6def4fbfa7331a59da6f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19343455668abab3ca3b05aa2cf616c2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97cf714ffb3fd5917a76b191640b55fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8f20e3745b76031e0bf6f5a4a860165.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,已知△
中,边
、
的垂直平分线分别交
于
、
,
,
,
.
(1)求边
的长;
(2)分别求出∠
和∠
的度数.
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae341f580ff8fbf21f616fe900b0e4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc896d35495237fd65576e9b6f88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e7c422a19b68b8b4cd484d22897e3a3.png)
(1)求边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)分别求出∠
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a38a6341dbb03ec2c0c10e5353a07c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb49d869110f27140f5c1934143db2e.png)
![](https://img.xkw.com/dksih/QBM/2018/11/16/2076734666694656/2083138655690752/STEM/ad2a28d852194d69be72a650287720bc.png?resizew=236)
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解答题-问答题
|
适中
(0.65)
名校
【推荐1】如图,在
中,
,
,
于点
,动点
从点
出发以
的速度沿线段
向终点
运动.设动点运动时间为
,
(1)求
的长.
(2)当
的面积为
时,求
的值.
(3)动点
从点
出发以
的速度在射线
上运动.点
与点
同时出发,且当点
运动到终点
时,点
也停止运动.是否存在
,使得
?若存在,请求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e5b21129fa053bb83a3c1e95e0285d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf2732c063f01d83e8f7cfc2b138732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9174c3b1324cf81098e42e0480bcc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/23/76185c57-9976-402e-b504-458a1205d8d5.png?resizew=113)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36aae82d53f2a35d2f95f467bd5b76cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc383f346271cd6d4da5804f2021b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc2d9b900111188aca83126dff97f32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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【推荐2】已知等腰三角形的三边长分别为a,3a-2,7a-5,求这个等腰三角形的周长
您最近一年使用:0次