在四边形
中,
的平分线
交
于
,延长
到
使
,
是
的中点,
交
于
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/23/fb219fa3-0f21-4558-9b4e-062cffc2c917.png?resizew=400)
(1)当四边形
是矩形时,如图,求证:①
;②
.
(2)当四边形
是平行四边形时,如图,(1)中的结论都成立,请给出结论②的证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e570eabbf1b9390fe78cbb37995c60f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce8f887360a533f0a25b0b34fb11f0a1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/23/fb219fa3-0f21-4558-9b4e-062cffc2c917.png?resizew=400)
(1)当四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8245bcd9cf3601f5718d095e1f129c86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e6138096b5f911b40fc2f7fea3c5ab.png)
(2)当四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
2022·湖南常德·中考真题 查看更多[7]
2022年湖南省常德市中考数学试题(已下线)专题12 平行四边形与中位线-2022年中考数学真题分项汇编(全国通用)(第1期)(已下线)第24课 相似三角形的性质 利用相似三角形测高-2022-2023学年九年级数学上册课后培优分级练(北师大版)(已下线)矩形、菱形、正方形01技法提练安徽省蚌埠市蚌埠第六中学2022-2023学年九年级上学期期末监测数学试卷安徽省蚌埠市第一实验学校2022-2023学年九年级上学期期末考试数学试卷湖南省常德市2022-2023学年九年级下学期期中数学试题
更新时间:2022-06-22 16:11:29
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,已知∠C=∠D=90°,D,E,C三点共线,各边长如图所示,请利用面积法证明勾股定理.
![](https://img.xkw.com/dksih/QBM/2022/6/20/3005342598758400/3005965138173952/STEM/038f31bbacde4cfea81eaca27d23dbd2.png?resizew=116)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图1,在△ABC中,∠B=60°,点M从点B出发沿射线BC方向,在射线BC上运动.在点M运动的过程中,连结AM,并以AM为边在射线BC上方,作等边△AMN,连结CN.
(1)当∠BAM= °时,AB=2BM;
(2)请添加一个条件: ,使得△ABC为等边三角形;
①如图1,当△ABC为等边三角形时,求证:CN+CM=AC;
②如图2,当点M运动到线段BC之外(即点M在线段BC的延长线上时),其它条件不变(△ABC仍为等边三角形),请写出此时线段CN、CM、AC满足的数量关系,并证明.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/06bc6594-cb62-4451-a09b-59e8291865e6.png?resizew=415)
(1)当∠BAM= °时,AB=2BM;
(2)请添加一个条件: ,使得△ABC为等边三角形;
①如图1,当△ABC为等边三角形时,求证:CN+CM=AC;
②如图2,当点M运动到线段BC之外(即点M在线段BC的延长线上时),其它条件不变(△ABC仍为等边三角形),请写出此时线段CN、CM、AC满足的数量关系,并证明.
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】如图,
是
的对角线,
平分
,交
于点M.
的角平分线
,交
于点N(要求:保留作图痕迹,不写作法);
(2)求证:四边形
为平行四边形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e142544a6d4e6851096afbd3cbad2fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868ff1350bd72625328c85c3097cd85e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408e2d26c0c8a6594c4baba496a4651d.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在
中,
,
是
的中点,
是
的中点,过点
作
交
的延长线于点
.
![](https://img.xkw.com/dksih/QBM/2020/10/9/2567247341649920/2567884653232128/STEM/3f226efd-a095-4053-acce-16fe97294439.png?resizew=285)
(1)求证:四边形
是菱形;
(2)若
,
,求菱形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37914c461ec0784f9f866ab43cee1809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2020/10/9/2567247341649920/2567884653232128/STEM/3f226efd-a095-4053-acce-16fe97294439.png?resizew=285)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a5a2949b3d520ed03d57126c7d4d8d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d649afbddd907f0dfec1420f02f82fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a5a2949b3d520ed03d57126c7d4d8d.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,在
中,
,
是
边上的高,已知
厘米,
厘米.求:
![](https://img.xkw.com/dksih/QBM/2018/9/10/2029445505122304/2035939488555008/STEM/17a8a45cc7a14391af8fa89053869ae6.png?resizew=131)
;
;
再找两条线段和
、
构成比例线段.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7281b641656a5992abaafb4190ca9afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45de082dfb670492300702f9aa422e91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cdd5aafca6ffa00e05eab101031752b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0408ea8540c68bebefaacea2023332d6.png)
![](https://img.xkw.com/dksih/QBM/2018/9/10/2029445505122304/2035939488555008/STEM/17a8a45cc7a14391af8fa89053869ae6.png?resizew=131)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b8fb3273a8eee454ea149b936c2b66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/099e55e4c105c64136350387a7171606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知四条线段a,b,c,d的长度,试判断它们是否成比例.
(1)a=16cm,b=8cm,c=5cm,d=10cm;
(2)a=8cm,b=5cm,c=6cm,d=10cm.
(1)a=16cm,b=8cm,c=5cm,d=10cm;
(2)a=8cm,b=5cm,c=6cm,d=10cm.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,在等腰直角三角形
中,
,腰长为
,
,且
把
分成面积相等的两部分,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048b61a5fb5f420c6d7de88db5bc3aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6028567b9374fac7ee328bc76deecc24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/2019/12/13/2354133184749568/2354508204859392/STEM/d92b32e2fca548f7814e1b16d97a7cc3.png?resizew=148)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在
中,
,
是边
延长线上一点,
是边
上一点,
,
,
.
![](https://img.xkw.com/dksih/QBM/2021/9/8/2803884681805824/2811636326670336/STEM/c5f77a5f-c432-456c-8a45-44bb1ca29cb5.png)
(1)求证:
;
(2)
,
的面积分别记为
,
,求
的值.
![](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/8455657dde27aabe6adb7b188e031c11.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7efbf33f4eecc40890ced2b970a8d2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82258cf5428f8a6d23d99f68b6209ebb.png)
![](https://img.xkw.com/dksih/QBM/2021/9/8/2803884681805824/2811636326670336/STEM/c5f77a5f-c432-456c-8a45-44bb1ca29cb5.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d0e6821f685dd278b0757e7067234cd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884d40a97fd767e95f34f3b91ab8d84c.png)
您最近一年使用:0次