1 . 如图,所有四边形都是正方形,所有三角形都是直角三角形,其中最大的正方形边长为
,则正方形
、
、
、
的面积和( )
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/a4430fde-bc7e-460b-88d2-f0eda986b85f.jpg?resizew=137)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d1b7aa6e3693af226ef7324c37534c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce13774b09ff2edddaf21a072cf60a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/a4430fde-bc7e-460b-88d2-f0eda986b85f.jpg?resizew=137)
A.14 | B.35 | C.42 | D.49 |
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2 . 如图,在
中,斜边
的长为5,分别以
的三条边为斜边向外作等腰直角
,
和
,则阴影部分的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/6/41e0106c-ae6b-43c7-afa8-680ea4d550bd.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004104bafb5f30338123d4ea2b7fedde.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/6/41e0106c-ae6b-43c7-afa8-680ea4d550bd.png?resizew=151)
A.25 | B.![]() | C.![]() | D.![]() |
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3 . 如图是一种“羊头”形图案,其作法是:从正方形①开始,以它的一边为斜边,向外作等腰直角三角形、然后再以其直角边为边,分别向外作正方形②和②',…依此类推,若正方形①的边长为
,则正方形⑨的边长为( )
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/c572e8f2-d64b-4708-b5e4-ec616be73206.jpg?resizew=259)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5861d7615d8db7bc6db7c3ccd69afd71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72026e70f45cea6a7c49881592e73a02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/c572e8f2-d64b-4708-b5e4-ec616be73206.jpg?resizew=259)
A.![]() | B.![]() | C.4 | D.2 |
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4 . 有一个边长为1的正方形,经过一次“生长”后,在它的左右肩上生出两个小正方形,其中,三个正方形围成的三角形是直角三角形,再经过一次“生长”后,变成了如图,如果继续“生长”下去,他将变得“枝繁叶茂”,请你计算出“生长”了2023次后形成的图形中所有正方形的面积之和为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/958ff3a4-5b85-490c-8d86-6b228d2d3e85.png?resizew=143)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/958ff3a4-5b85-490c-8d86-6b228d2d3e85.png?resizew=143)
A.2022 | B.2023 | C.2024 | D.2025 |
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5 . 如图,在平面上依次摆放着7个正方形,嘉嘉和琪琪观察之后得出下面的结论:
嘉嘉:如果左边第1个正方形的面积是3,第3个正方形的面积是4,则第2个正方形的面积是7;
琪琪:如果斜放置的3个正方形的面积从左到右依次是a,b,c,则正放置的4个正方形的面积之和为
.
其中说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/ee212e05-0ed1-4368-ad1a-8756774ed2a0.png?resizew=278)
嘉嘉:如果左边第1个正方形的面积是3,第3个正方形的面积是4,则第2个正方形的面积是7;
琪琪:如果斜放置的3个正方形的面积从左到右依次是a,b,c,则正放置的4个正方形的面积之和为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd1810555c0c28fe352841322b85bbc6.png)
其中说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/ee212e05-0ed1-4368-ad1a-8756774ed2a0.png?resizew=278)
A.嘉嘉正确,琪琪错误 | B.嘉嘉错误,琪琪正确 |
C.嘉嘉和琪琪均正确 | D.嘉嘉和琪琪均错误 |
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6 . 如图,
中,
,分别以直角三角形的三条边为边,在直线
同侧分别作正三角形,已知
,
,
,则
的面积是( )
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b85c4cb089aca07e822aaa3a6a29566f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4a03ab079e738e4a8460a7f4ae91d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca767f54fc2b75c01aa96d3861c0bc35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.5 | B.11 | C.17 | D.22 |
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7 . 如图,在
中,
,若
,则正方形
和正方形
的面积和为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/3630ea10-0b92-48df-b4c2-0ea9ac0817a1.png?resizew=121)
![](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/6dd90bfa2987b84df430498021d5f648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e65831c1e6103af4c0bb4a4a61b964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60c3b75ff1610956dfe9a9cd7692d03.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/3630ea10-0b92-48df-b4c2-0ea9ac0817a1.png?resizew=121)
A.225 | B.200 | C.150 | D.15 |
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8 . 如图,以
的三边分别向外作正方形,分别记它们的面积为
,
,
,若
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.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/feb1a08760dac52b4b9eb18c218dda6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/5cdda8c0-3d89-48ef-be55-a8ca0e8a8513.png?resizew=152)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 如图所示,在
中,
,分别以直角三角形
的三条边为直径向外作三个半圆,面积分别为25和9,则以
为直径的半圆的面积是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3cc9cccfb4c260dac05f4ed57e8c10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
A.4 | B.10 | C.16 | D.32 |
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10 . 勾股定理是人类早期发现并证明的重要数学定理之一,是数形结合的重要纽带.数学家欧几里得利用下图验证了勾股定理.以直角三角形
的三条边为边长向外作正方形
,正方形
,正方形
,连接
,
,过点C作
于点J,交
于点K.设正方形
的面积为
,正方形
的面积为
,矩形
的面积为
,矩形
的面积为
,下列结论中:①
;②
;③
;④
,正确的结论有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c35e7a990d8ff3e55945fd4718a9740.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d70676406f26d339465fe3473c0c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616b46476c1f1d22e3a21d6fa33a3400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9020059d62af7498039f091de6f005ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b2d867e080a3432bc0eebfbff4d07c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c35e7a990d8ff3e55945fd4718a9740.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616b46476c1f1d22e3a21d6fa33a3400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb8b1372528e5ba6d091b58f87728dfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28bccb086bb32af1b5e0634e3cd7ffb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f30f56664446f32dbbc2c5f12a99374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81275cdcd92482b9cd2f0bb486ea1ecc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aeeaccd9f736b9ecd14c816fc1069cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0808109c975b3da7ef0938d7f4e143ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45bdd3be693e4d14b3343aa4382fd42.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
2024-04-01更新
|
55次组卷
|
8卷引用:福建省福州市晋安区2021-2022学年八年级下学期期中数学试题
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