《周髀算经》中记载了“偃矩以望高”的方法.“矩”在古代指两条边呈直角的曲尺(即图中的
).“偃矩以望高”的意思是把“矩”仰立放,可测量物体的高度.如图,是用“矩”测量一个
信号塔高度的示意图,点
在同一水平线上,
和
均为直角,
与
交于点
,测得
,
,则信号塔
的高度为______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47248d88a8876e1177cbd3ba43b11bea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/229607a6ad0b43746d19083d7563a270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5567eab2f0af611b817cd26a56796cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecda9905814b72ae8d60bc3210b3015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca3233b7646a1a2065929669c805c3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/63ab5ab3-c792-4db0-a41f-848fa5e5b072.png?resizew=201)
更新时间:2024-03-05 19:10:10
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【知识点】 相似三角形的判定与性质综合
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【推荐1】有一块三角形余料
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【推荐2】如图所示,
中,
,
,若
的面积是4
,则四边形
的面积为_____ .
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