已知:如图1,△ABC中,D是BC上一点,CD=
AC,E是AC上一点,EF∥BC,交AD于F;G是AB上一点,且FG=EF;作BH∥FG,交AD于H;作MH∥EF,交AC于M;作MN∥BH,交BC于N.
求证:(1)四边形BHMN是菱形;
(2)AM:BN:MN=2:1:1.
应用:请根据上面的已知及证明的结论,画图(保留画图痕迹);
如图2,在边AC和BC上分别取点M和N,使得AM:BN:MN=3:1:1.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
求证:(1)四边形BHMN是菱形;
(2)AM:BN:MN=2:1:1.
应用:请根据上面的已知及证明的结论,画图(保留画图痕迹);
如图2,在边AC和BC上分别取点M和N,使得AM:BN:MN=3:1:1.
![](https://img.xkw.com/dksih/QBM/2019/5/25/2211214344085504/2212216647942144/STEM/92c96196c8ce406eb825886efe21ace9.png?resizew=344)
更新时间:2019-05-26 22:29:12
|
相似题推荐
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,矩形
的顶点
,
分别在菱形
的边
,
上,顶点
,
在菱形
的对角线
上.
![](https://img.xkw.com/dksih/QBM/2021/9/9/2804341546893312/2811031222771712/STEM/d8ee5fb4-01c3-464a-b428-17304c3a0807.png)
(1)求证:
;
(2)若
为AD中点,
,求菱形
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/2021/9/9/2804341546893312/2811031222771712/STEM/d8ee5fb4-01c3-464a-b428-17304c3a0807.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec862cfde0bed66426c0b26a5235a853.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cd2d45694aaded7ff8b0ecaf48196ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图菱形ABCD中,∠BAD=120°,E为AD的中点,OE=4.求:
![](https://img.xkw.com/dksih/QBM/2022/4/26/2966396544032768/2977808968769536/STEM/916e7af3-7c97-4f52-9bd4-baee35ab881c.png?resizew=324)
(1)AB的长;
(2)AC、BD的长.
![](https://img.xkw.com/dksih/QBM/2022/4/26/2966396544032768/2977808968769536/STEM/916e7af3-7c97-4f52-9bd4-baee35ab881c.png?resizew=324)
(1)AB的长;
(2)AC、BD的长.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】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/editorImg/2023/5/3/d38c8c77-d3d1-464b-a302-89a324fd3513.png?resizew=321)
(1)求证:四边形
是菱形;
(2)若
,
,求菱形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.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/880efdb2b4ac4861ad808e0162d082be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/3/d38c8c77-d3d1-464b-a302-89a324fd3513.png?resizew=321)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0a255b7e4988e013e973c382d4a6c6a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addb8e20db1fbb40f17dea52f951b907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4933a83f79bb89a889b704d0f563a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0a255b7e4988e013e973c382d4a6c6a.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,点A,D在∠XOY的边OX上,点B,E在OY边上,射线OZ在∠XOY内,且点C,F在OZ上,AC∥DF,BC∥EF.
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/33aa8d45-05bf-47b8-b0e6-32d3c4421667.png?resizew=211)
(1)试说明△ABC与△DEF是位似图形;
(2)求△ABC与△DEF的位似比.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf771ad306bad8a1a97b0adfb7cb0ea.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/33aa8d45-05bf-47b8-b0e6-32d3c4421667.png?resizew=211)
(1)试说明△ABC与△DEF是位似图形;
(2)求△ABC与△DEF的位似比.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】如图所示,
,
,
,点
是以
为直径的半圆
上一动点,
交直线
于点
,设
.
时,求弧
的长;
(2)当
时,求线段
的长;
(3)若要使点
在线段
的延长线上,则
的取值范围是________ _.(直接写出答案)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822ba132ca9dd0d4a050659aef3c9b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e41916523511064a97de39b0f2b323.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/772958c6e60520f87f9f1b58b0097a95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a40c71d6ab58e870fbd2073ffe85ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c96cb3ac8290e09c55d4eb336a8608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(3)若要使点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次