如图所示,琪琪用6个含30°角的直角三角板拼成内外都是正六边形的图形,则大小两个正六边形的边长比AB:GH的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/30/c3026300-d7cf-45e1-b758-aabf2a3b3678.png?resizew=155)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/30/c3026300-d7cf-45e1-b758-aabf2a3b3678.png?resizew=155)
A.2 | B.![]() | C.![]() | D.![]() |
更新时间:2021-05-03 19:31:29
|
相似题推荐
单选题
|
适中
(0.65)
【推荐1】将一副直角三角板如图放置,使GM与AB在同一直线上,其中点M在AB的中点处,MN与AC交于点E,∠BAC=30°,若AC=9cm,则EM的长为( )
![](https://img.xkw.com/dksih/QBM/2019/1/26/2127223884685312/2128636090679297/STEM/add1ff39c9ee410994b603ddcdfc34ba.png?resizew=157)
![](https://img.xkw.com/dksih/QBM/2019/1/26/2127223884685312/2128636090679297/STEM/add1ff39c9ee410994b603ddcdfc34ba.png?resizew=157)
A.2.5cm | B.3cm | C.4cm | D.4.5cm |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】如图,
中,
,
,
于
,
是
的中线.要说明“三个角分别对应相等的两个三角形全等”是假命题,可以作为反例的两个三角形是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/27/200c48e3-c1e3-4577-ac4c-96257b41171a.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/27/200c48e3-c1e3-4577-ac4c-96257b41171a.png?resizew=166)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,在四边形ABCD中,对角线BD平分∠ABC,∠DBC=30°,∠BAD=∠BDC=90°,E为BC的中点,AE与BD相交于点F,若CD=2,则BF的长为( )
![](https://img.xkw.com/dksih/QBM/2020/12/5/2607413878865920/2613336032526336/STEM/a30a7cfba7244feda4194354d65a65f2.png?resizew=155)
![](https://img.xkw.com/dksih/QBM/2020/12/5/2607413878865920/2613336032526336/STEM/a30a7cfba7244feda4194354d65a65f2.png?resizew=155)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】如图,是一个底部呈球形的蒸馏瓶,球的半径为
,瓶内液体的最大深度
,则截面圆中弦
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd6f4250ca6b1b9bce234a01f00d44d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27ae4abe9a90ac25d09482ab9b965a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次