给出一个图形的特殊情况,类比这个图形推广到一般情况下,研究结论是否仍然成立的课题学习类问题,是中考数学的高频考点.解决这类问题时,要搞清楚图形在推广到一般情况的过程中,哪些量没有变化,哪些量发生了改变,这些改变的量对原先解决问题的方法有没有影响. Given a special case of graphics, the generalization of this graphic analogy to the general situation, the study concluded that the problem is still the establishment of learning problems, high school entrance examination mathematics test points. To solve such problems, we must figure out the generalization of graphics in general In the course of the situation, which quantities have not changed and which ones have changed. The amount of these changes has no effect on the original solution to the problem.