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如果矩形有四个顶点都在三角形的边上,那么这个矩形称为此三角形的内接矩形.三角形及其内接矩形有一个应用广泛的关系式,现介绍如下:
If the rectangle has four vertices on the edge of the triangle, then this rectangle is called the inscribed rectangle of the triangle, and the triangle and its inscribed rectangle have a widely used relationship, as follows: