北师大版八年级下第六章 平行四边形 第一节 平行四边形的性质及判定
全国
八年级
课后作业
2020-03-07
1230次
整体难度:
适中
考查范围:
图形的性质、函数
一、单选题 添加题型下试题
A.两条对角线相等 | B.两条对角线垂直 |
C.两条对角线互相平分 | D.一条对角线平分一组对角 |
【知识点】 判断能否构成平行四边形解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a87b751678321ed4f8c79405367a864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
A.30°,150° | B.35°,145° | C.40°,140° | D.45°,135° |
【知识点】 利用平行四边形的性质求解解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c06e36ec59fa93ac857e35796a4b8311.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/299fe914d64f3a06f9b641d5591fc47a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/15/01afb551-09b9-43db-9360-6a39ad566056.png?resizew=193)
A.2cm | B.3cm | C.4cm | D.5cm |
【知识点】 线段垂直平分线的性质解读 平行四边形性质的其他应用解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.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/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc52a06d806fde891e09a0a389fcd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.8cm | B.9cm | C.10cm | D.11cm |
【知识点】 利用平行四边形的性质求解解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c361c243ef1f997a87dde943671497d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
A.10 | B.12 | C.9 | D.15 |
【知识点】 利用平行四边形的性质求解解读
A.1 | B.2 | C.3 | D.4 |
【知识点】 判断能否构成平行四边形解读
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/30/1f440e00-22f1-4962-a4b0-b757ee23fbeb.png?resizew=137)
A.5 | B.10 | C.20 | D.40 |
【知识点】 与三角形中位线有关的求解问题解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23725094c363fd158166a8698971694c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5efe57aca2f76116c2f62fb6f224be26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ffb82aa1614cd1bc28940b1a7252fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99a1b8cfb22e506737737da543ea3732.png)
A.5∶3 | B.3∶5 | C.10∶3 | D.3∶10 |
【知识点】 平行四边形性质的其他应用解读
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/23bb2a59-28b8-497b-9d16-1b7f45443464.png?resizew=181)
A.2 |
B.3 |
C.4 |
D.5 |
【知识点】 利用平行四边形的性质求解解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/548c615df14e04012ea6160da41b234b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fb3ad37b97e0d318cae8f8dcf3f1e6.png)
A.红花、绿花种植面积一定相等 | B.紫花、橙花种植面积一定相等 |
C.红花、蓝花种植面积一定相等 | D.蓝花、黄花种植面积一定相等 |
【知识点】 平行四边形性质和判定的应用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
A.8与14 | B.10与14 | C.18与20 | D.10与38 |
【知识点】 构成三角形的条件解读 平行四边形性质的其他应用解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d99bb3ab66b8884bf23cffe1bddcb33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e317c69d692137a4ccb626a9ba47718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c129397d481beba80d0251fa926fdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585cad26a48f3c4bdea01cf0ae3d43e7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/a1fcf4b7-02dd-495b-987c-6efae1a1e323.png?resizew=198)
A.1个 | B.2个 | C.3个 | D.4个 |
A.第一象限 | B.第二象限 | C.第三象限 | D.第四象限 |
【知识点】 坐标与图形
二、填空题 添加题型下试题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.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/910936ec9fb419d51ce2f5ea817f8401.png)
【知识点】 利用平行四边形的性质证明解读 添一个条件成为平行四边形解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1bd2df83e2b8a07077a94a6642420e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c924c224fac40c01fd9364a7ccaff1.png)
【知识点】 平行四边形性质的其他应用解读
三、解答题 添加题型下试题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a5328919a7cec382c2e91c9c528fc1.png)
(2)求证:四边形BMDN是平行四边形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85814f051a479a1b04a46f70e96557a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/343f75e17b862051b15696334fec1eff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87e1fe20bb0e8292e993657e14bc79a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/2/04ee001d-648e-4628-ba84-0a9b8dce41e9.png?resizew=193)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2da1d50433aecf541991fd0f01773cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(1)延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)如果将条件“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2da1d50433aecf541991fd0f01773cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09a9a6f020159406608000cf93d4fa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/16/1ad4ea62-015f-40ca-81ff-021220ecab04.png?resizew=268)
【知识点】 全等三角形综合问题 利用平行四边形性质和判定证明解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f546f2a87ed748c5a1bd0365e1b60027.png)
![](https://img.xkw.com/dksih/QBM/2020/3/4/2412285104128000/2412377743179776/STEM/18bd621bccb74631a80a1b59c021f48d.png?resizew=185)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0532fccfa9bae5ed1b954b9f4a2c94d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e8bee8c2c0958570fa919c8261e1579.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/2021/10/3/2821608412479488/2821665474822144/STEM/4eef0494-c3c2-4bcd-bc0a-88dcc88a1c28.png?resizew=312)
四、单选题 添加题型下试题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d2530e7023b2345c651e8f53629ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ded93b8a5c36c569133c1284ae04dfeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf0f03734e0d7e4de1d02f2e99b5124.png)
A.15° | B.20° | C.25° | D.30° |
【知识点】 等边对等角解读 与三角形中位线有关的证明解读
作AF垂直于直线CD于点F,若AB=5,BC=6,则CE+CF的值为【 】
A.11+![]() | B.11-![]() |
C.11+![]() ![]() | D.11-![]() ![]() |
【知识点】 用勾股定理解三角形解读 利用平行四边形的性质求解解读
五、解答题 添加题型下试题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98b6981e0b9882b0e4e3e27c14caf55.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca779608eb35d380b27c6da16f1a211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc896d35495237fd65576e9b6f88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f089a93876391b3bfd211502a236feb9.png)
![](https://img.xkw.com/dksih/QBM/2020/3/4/2412285104128000/2412377743343616/STEM/6f96b38f9fb84fd78e7efa6d48e4c6c9.png?resizew=276)
(1)求证:∠BEN=∠BGN.
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5ad26beb910fb60f9a01e746ee1b2d.png)
(3)当M在AD上运动时,探究四边形BDNG的形状,并证明之.
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试卷分析
试卷题型(共 26题)
试卷难度
细目表分析 导出
题号 | 难度系数 | 详细知识点 | 备注 |
一、单选题 | |||
1 | 0.85 | 判断能否构成平行四边形 | |
2 | 0.85 | 利用平行四边形的性质求解 | |
3 | 0.4 | 线段垂直平分线的性质 平行四边形性质的其他应用 | |
4 | 0.85 | 利用平行四边形的性质求解 | |
5 | 0.65 | 利用平行四边形的性质求解 | |
6 | 0.85 | 判断能否构成平行四边形 | |
7 | 0.85 | 与三角形中位线有关的求解问题 | |
8 | 0.85 | 平行四边形性质的其他应用 | |
9 | 0.65 | 利用平行四边形的性质求解 | |
10 | 0.65 | 平行四边形性质和判定的应用 | |
11 | 0.65 | 构成三角形的条件 平行四边形性质的其他应用 | |
12 | 0.4 | 平行四边形性质的其他应用 与三角形中位线有关的求解问题 | |
13 | 0.65 | 坐标与图形 | |
22 | 0.65 | 等边对等角 与三角形中位线有关的证明 | |
23 | 0.65 | 用勾股定理解三角形 利用平行四边形的性质求解 | |
二、填空题 | |||
14 | 0.65 | 利用平行四边形的性质证明 添一个条件成为平行四边形 | |
15 | 0.4 | 平行四边形性质的其他应用 | |
16 | 0.65 | 利用平行四边形的性质求解 | |
三、解答题 | |||
17 | 0.65 | 全等的性质和ASA(AAS)综合(ASA或者AAS) 证明四边形是平行四边形 | 证明题 |
18 | 0.85 | 全等的性质和SAS综合(SAS) 等边三角形的性质 证明四边形是平行四边形 利用平行四边形性质和判定证明 | 证明题 |
19 | 0.4 | 全等三角形综合问题 利用平行四边形性质和判定证明 | 问答题 |
20 | 0.15 | 灵活选用判定方法证全等(全等三角形的判定综合) 等边三角形的判定和性质 与三角形中位线有关的证明 | 证明题 |
21 | 0.65 | 全等三角形综合问题 等腰三角形的性质和判定 利用平行四边形的性质证明 | 证明题 |
24 | 0.15 | 倍长中线模型(全等三角形的辅助线问题) 利用勾股定理求两条线段的平方和(差) 利用平行四边形的性质证明 与三角形中位线有关的证明 | 证明题 |
25 | 0.65 | 全等三角形综合问题 用勾股定理解三角形 证明四边形是平行四边形 | 证明题 |
26 | 0.15 | 全等三角形综合问题 用勾股定理解三角形 利用平行四边形性质和判定证明 | 问答题 |