射影几何是研究图形的射影性质,即它们经过射影变换后,依然保持不变的图形性质的几何学分支学科.一度也叫做投影几何学,在经典几何学中,射影几何处于一种特殊的地位,通过它可以把其他一些几何学联系起来.本文从几个例题来解说射影 Projective geometry is the study of the projective nature of graphics, that is, after they have been projectively transformed, they still maintain the same geometrical branch of graphic nature. Once also called projective geometry, projective geometry is in a special position in classical geometry. , through which you can relate other geometry. This article explains the intuition from several examples.