画法几何题目中不可解题的判别方法分析

Discriminance Analysis of Inapprehensible subject on Descriptive Geometry

利用解析几何方法,对画法几何题目进行分析,从而提供了一种事先判断该题目是否有解、能否用绘图仪器直接作图的判别方法,确保了画法几何题目用图解法得到结果。

The analytic geometry method is applied to analyze the subjects on Descriptive Geometry, which provides discriminance analysis on whether there is solution and whether drawing instruments could be directly used for drafting. Thus the subjects on Descriptive Geometry could be solved by graphical method.