数学题：已知AB＝12厘米，BC＝8厘米，求三角形ABC中阴影正方形的边长是多少厘米？(长方形的各顶点为三角形各边中点)。

数学题解答：

这个题目有问题，前面说是正方形，后面又说长方形，前后不一致。且如果阴影是正方形，则正方形的各顶点，不可能在三角形各边的中点上。故题目有误！

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