摘要
主要从空间几何学的角度论证了二种较为新颖的透视求法的科学依据，以培养和提高人们的逻辑思维与形象思维的能力。
From point of view of space geometry this paper expounds and proves mainly the scientific nature of two kinds of new perspective methods, in order to train and raise peoples ability of logical thinking and thinking in images.
关键词
透视法
几何作图
两线法
perspective geometry, problems of geometrical constraction/ method of two line
