最近,我们在对教材的研究中发现了关于“背腹式连体相似直角三角形”的两个有趣性质,现简介如下: 一、概念简介我们将两个直角三角形中具有一条公共边且此公共边为其中一个三角形的直角边又同时为另一三角形的斜边所构成的图 Recently, we have found two interesting properties about “back-to-back type Siamese similar triangles”, which are summarized as follows: I. Concept Introduction We will have a common edge in two right triangles and The common edge is a figure composed of the right side of one triangle and the hypotenuse of another triangle.