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斜腰等于两底之和的直角梯形是数学王国里的一朵美丽的奇花,对它深入的挖掘和探究,许多和谐的比例、优美的图形会呈现在你的面前,真是花色满目,美不胜收,令人为之震颤.下面用相似三角形、射影定理及辅助圆来挖掘它的性质.
The right-angled trapezium whose waist is equal to the sum of the two bases is a beautiful exotic flower in the mathematics kingdom. Excavating and exploring it in depth, many harmonious proportions and graceful figures will appear in front of you. It’s a beautiful flower. It is tremorous. The following uses similar triangles, projective theorem and auxiliary circle to mine its properties.