(1)计算![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6da9a07193d4638a74d5d41ebb0603a.png)
(2)已知:如图,平行四边形
的对角线
、
相交于点
,过点
的直线分别与
、
相交于点
、
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6da9a07193d4638a74d5d41ebb0603a.png)
(2)已知:如图,平行四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://img.xkw.com/dksih/QBM/2019/12/19/2358455588061184/2358488828059648/STEM/1041445a9ec44ababe9d1dfac3843b49.png?resizew=156)
18-19八年级下·江西·期末 查看更多[4]
(已下线)【新东方】【南昌新东方2】2019年6月江西南昌青山湖区调研卷初二下学期期末数学试卷江西省南昌市青山湖区2018-2019学年八年级下学期期末数学试题江西省南昌市青山湖区2018-2019学年八年级下学期期中数学试题广东省河源市东源县船塘中学2020-2021学年八年级上学期10月月考数学试题
更新时间:2019-12-19 14:20:42
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解答题-计算题
|
适中
(0.65)
【推荐1】计算
(1)计算:
.
(2)化简:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66027e010650fef64f02ea0ad1ba7864.png)
(3)化简求值:
,其中
.
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57445653b755fbb8dca5065b7f314c13.png)
(2)化简:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66027e010650fef64f02ea0ad1ba7864.png)
(3)化简求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d72ee796e1e44ad14a6560a48b6669d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ffd264d771b5a4ccb3f288ecd4aeab5.png)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐1】计算:
(1)(
+4
)﹣(3
﹣2
);
(2)(
+
)2﹣(
﹣
)2;
(3)先化简,再求值:
÷(
),其中x=
+1.
(1)(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46f33f578fbb88a7525ef32e7126856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1411e66402359355af5ef24dde907b08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf33c54dac0b9fc5d1800e5df36619b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a04b0b0618710dbde3de439ae377d2aa.png)
(2)(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(3)先化简,再求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/897d294c2f6724d3d73d86e6fdb3e6cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe4e101823fd7cca450e90c80a4ab6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐2】(1)计算:
(2)已知,如图,在四边形ABCD中,∠A=∠C,AB//DC.求证:四边形ABCD是平行四边形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d707a8fe6a2e5b7ef2a585b1a2de4a08.png)
(2)已知,如图,在四边形ABCD中,∠A=∠C,AB//DC.求证:四边形ABCD是平行四边形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/10/4d5b8928-8ef2-4451-a8df-f448c6b810b4.png?resizew=212)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】综合与探究
如图,在平面直角坐标系中,已知
,
,其中
,
满足
,点
是第一象限内的点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/6af75937-8d34-4792-bad5-123ed29ebe90.png?resizew=164)
(1)分别求出点
、
、
的坐标.
(2)如果在第二象限内有一点
,是否存在点
,使得
的面积等于
的面积?若存在,请求出点
的坐标;若不存在,说明理由.
(3)在平面直角坐标系是否存在点
,使
与
全等,若存在,请直接写出点
的坐标;若不存在,请说明理由.
如图,在平面直角坐标系中,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296c31eaede57efe89ffb83f02ad4622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5612d598e27ac2ce0ab89fb63538bf.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/96b81108d4cd730db5d1f40120a41991.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/6af75937-8d34-4792-bad5-123ed29ebe90.png?resizew=164)
(1)分别求出点
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
(2)如果在第二象限内有一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae325fb1fe6c8a7183cec6dc6be49457.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)在平面直角坐标系是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐2】如图,在四边形ABCD中,∠C=∠B=90°,M为CB的中点,且DM平分∠ADC,
(1)AM平分∠DAB吗?为什么?
(2)线段AD,AB,DC有怎样的数量关系,说明理由.
(1)AM平分∠DAB吗?为什么?
(2)线段AD,AB,DC有怎样的数量关系,说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/ddcb97d4-ea73-4750-bbb6-db318026e41d.png?resizew=100)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在
中,
的角平分线恰好经过边
的中点
,且与边
的延长线交于点
.连接
,过点
作
于点
,交
于点
.
(1)求证:四边形
是平行四边形.
(2)若
,
,直接写出四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c132b1634ce91b5879940593c4c65716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/13/4150cb3d-6d18-4cb5-b29c-95b73864249d.png?resizew=171)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee3fc129c470d9c67994d4b84ac5bc2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee3fc129c470d9c67994d4b84ac5bc2.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】已知
,E为
延长线上一点,
与
交于点G,与
交于F点,若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d74c4da110f615caf569bab891216e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/21/c58256ba-cf6c-48a2-9475-b6549ed7c10e.png?resizew=201)
您最近一年使用:0次