1 . 如图,以
的三边为直径分别向外作半圆,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b625192d7398634a02ea24fa78ed87.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5caae98fb6b6a492f144314924804e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71edfe882e48ee0a5adb5613ece498a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b625192d7398634a02ea24fa78ed87.png)
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2 . 如图,分别以直角三角形三边为直径作半圆,设图中两个月形图案(图中阴影部分)的面积分别为S1,S2,直角三角形两直角边长分别为6和8,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d0c1821ee87131a79831e234b6f3a6.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d0c1821ee87131a79831e234b6f3a6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/1/b01414f2-8634-4171-a82a-40c2c8d280cc.png?resizew=199)
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3 . 四个全等的直角三角形可以拼成两个正方形,有两种拼法,如图所示,两直角边长分别为
,图中空白部分的面积分别为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ded60065080b3b4cdf6931362652bd.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ff2912fd8d93b6e692936d95b727c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b982b4ed3b75609bda6af3914986d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8060a00d925f27135a7baff2d0e9d598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ded60065080b3b4cdf6931362652bd.png)
您最近一年使用:0次
4 . 如图,这是由两个直角三角形和三个正方形组成的图形,其中阴影部分的面积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/e71a4505-c074-4f64-949b-4aee4b569d1e.png?resizew=244)
A.169 | B.144 | C.30 | D.25 |
您最近一年使用:0次
5 . 如图所示,在
中,
,
,
,
于点D,求
的长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/53af27a4-e5f9-41d5-81c5-bc65d403b2e8.png?resizew=171)
您最近一年使用:0次
6 . 如图,分别以直角三角形的三边向外作正方形,若正方形面积
,
,则正方形面积![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b625192d7398634a02ea24fa78ed87.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f56de8f4df2cbd501c56927d5e56847f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9651204c54475c2e8cda8d0a6eeba177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b625192d7398634a02ea24fa78ed87.png)
您最近一年使用:0次
2024-01-17更新
|
141次组卷
|
3卷引用:广东省清远市2023-2024学年八年级上学期期末数学试题
7 . 如图,等腰直角三角形
的直角边长为
,分别以它的三边为直径向上作半圆,则图中阴影部分的面积是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
您最近一年使用:0次
2024-01-17更新
|
146次组卷
|
3卷引用:重庆市北碚区2023-2024学年八年级上学期期末数学试题
8 . 如图,在
中,
,以
的三边为边向外作三个正方形,如果正方形
和正方形
的面积分别为
和
,那么正方形
的面积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/ce2c5a69-80e6-4c64-b7ac-c455686de9b8.png?resizew=165)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e22545a765af9563ea7c8db75c16df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616b46476c1f1d22e3a21d6fa33a3400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d70676406f26d339465fe3473c0c05.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/ce2c5a69-80e6-4c64-b7ac-c455686de9b8.png?resizew=165)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 如图,
中,
,分别以
、
、
为边在
的同侧作正方形
、
、
,四块阴影部分的面积分别为
、
、
、
.若已知
,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/6fd990d9-c318-454c-beaa-0c9452aea131.png?resizew=203)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/100bb28abda3a65c2a61fa6db2e3f8d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae7f709cd4bf123f329605b2f9ea679.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/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f30f56664446f32dbbc2c5f12a99374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3482ef3fa56f39b5435a4c5eeca65c99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/838a984dff7abdc750c97afd75e962eb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/6fd990d9-c318-454c-beaa-0c9452aea131.png?resizew=203)
A.18 | B.24 | C.25 | D.36 |
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10 . 如图,由两个直角三角形和三个正方形组成的图形.其中两正方形面积分别是
,
,
,则
的长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0d7aa815d046dac3d1ee1698206d8f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05a518f9cabe52a507226ea6cdcf9696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c8e81c99d93ed19230d4bf93d039b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/6915794b-1962-4ccb-8f7d-880b9f75c067.png?resizew=169)
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