如图,为直角三角形,分别以直角边
、斜边
为边构造正方形
、
,过点
分别作
、
的垂线,垂足为
、
,
与
交于点
,若要求出
与
的面积差,则需要知道下列哪个图形的面积( )
A.![]() | B.![]() | C.四边形![]() | D.矩形![]() |
更新时间:2022-11-16 05:45:49
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【推荐1】以
各边为边分别向外作等边三角形,编号为①、②、③,将②、①依次叠在③的上面,如图,已知四边形
与四边形
的面积分别为
和
,那么边
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/872b328f-fced-4926-babd-4bb8f101c099.png?resizew=308)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,直线l上有三个正方形a、b、c,若a、c的面积分别为3和4,则b的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/14e29d5d-bd8d-4235-8248-0442c7c6aa21.png?resizew=264)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/14e29d5d-bd8d-4235-8248-0442c7c6aa21.png?resizew=264)
A.3 | B.4 | C.5 | D.7 |
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【推荐1】如图,在平面直角坐标系中,菱形
的对角线
,
的交点与坐标原点
重合,
与
轴交于点
,反比例函数
的图象经过点
.若点
,
,则
的值为( )
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【推荐2】如图,在
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A.![]() | B.![]() | C.![]() | D.![]() |
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