名校
解题方法
1 . 若点
为
的重心,且
,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac181587e24ada2d254f9918b62e70a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32e2f2d7147cf1699fbfdef9cf4af74.png)
您最近一年使用:0次
2 . 设
是锐角三角形,在
外分别作等腰
,
,
.在这三个三角形中,
,
,
是直角.又在四边形
外作等腰
,
是直角.求证:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0773ef97c87725335faeaa95163e9121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3814287dbb60d478bffc5366f9928b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0cbb2136f494b636d32034eface2ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a72dfbf0138a611174c36ce077e0c47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97e152c7ab6ce9602ca73d5da3f0fa1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a28d6477c85c5a4ac410a884e92fbe53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9c1f737fef878e58e5398dd74158a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ca0ea573af39647bbb44977ed1eeb2.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f66223f7a93a035a1c2cce2e52cf55.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af08f32e7336122304abaf88660941f.png)
您最近一年使用:0次