在我们所学过的几何知识里,并无“正度”、“散度”概念,它们只为研究问题的需要而设立,下面两个问题就是这样. 问题1 题图1,这些等腰三角形与正三角形的形状有差异,我们把它与正三角形的接近程度称为“正度”.在研究“正度”时,应保证相似三角形的“正度”相等. In the geometry knowledge we have learned, there is no concept of “positiveness” or “divergence”. They are only established for the study of the needs of the problem. The following two problems are the same. Problem 1 Figure 1, these isosceles triangles Different from the shape of the equilateral triangle, we call it the degree of closeness to the equilateral triangle as “positive”. In the study of “positive”, we should ensure that the “positiveness” of similar triangles is equal.