论文部分内容阅读
平行四边形无论从图形所具有的性质与图形的运动轨迹,还是从知识的逻辑性与知识研究过程,或者从分类学与数学的简约性角度来看,把它归为特殊的梯形比较有利.
The parallelogram is advantageous to classify it as a special trapezoid, not only from the nature of the figure and the movement of the figure, but also from the process of the logic and knowledge of knowledge, or from the perspective of the simplicity of taxonomy and mathematics.