将四个长为a,宽为
的长方形纸片,按如图的方式拼成一个边长为
的正方形,图中空白部分的面积为
,阴影部分的面积为
,若
,则a,b满足( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/126db3b9c2f680708b41aae3ae1a1c21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0034de31c6d9f4412cf54a01160c3573.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/371a0f40eaadc08443e3ac0a9cd86196.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-02-26 17:54:29
|
【知识点】 完全平方公式在几何图形中的应用解读
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【推荐1】如图,为了美化校园,某校要在面积为30平方米长方形空地
中划出长方形
和长方形
,若两者的重合部分
恰好是一个边长为3米的正方形,现将图中阴影部分区域作为花圃,若长方形空地
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,正方形
和矩形
的面积相等,且四边形
也为正方形,点
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上,
与
交于点
.欧几里得在《几何原本》中利用该图得到了:
.设
,
.若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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