数学几何问题中蕴含着丰富的数学思维方法,转化法便是其中之一。在解答几何问题时,同学们要化几何为代数,化正面为反面,化空间为平面,使问题得以解决。一、正面与反面的转化,化正为反在求解某些几何问题时,若正面求解难度较大,无从下手,同学们不妨转换视角,化正为反,从反面探求 Mathematical geometry contains a wealth of mathematical thinking methods, the transformation method is one of them. In solving the geometry problem, the students want to geometry as the algebra, the front is negative, the space is flat, so that the problem can be solved. First, the positive and negative transformation, is to solve some of the geometric problems in the anti-positive, if the positive solution is difficult, can not start, students may wish to change perspective, is against, from the opposite