动态几何就是研究在几何图形的运动中,伴随着出现一定的图形位置、数量关系的“变”与“不变”性;就其运动对象而言有点动、线动、面动;就其运动形式而言有平动、旋转、翻折、滚动等.动态几何问题常常集几何、代数知识于一体,数形结合,有较强的 Dynamic geometry is the study of geometry in the movement, accompanied by the emergence of a certain number of graphics position, the relationship between the number of “” and “unchanged ”; in terms of their movement of a little dynamic, linear motion, surface motion ; In terms of their movement form in terms of translation, rotation, folding, rolling, etc. Dynamic geometric problems often set geometry, algebraic knowledge in one, the combination of a few figures, there is a strong